When using stamp, drop attributions other than back and foreground
colors so that stamp is not updated unnecessarily.

Misc style clean up's.
- Introduce and use proper macros.
- Use not ambiguous variable names.
- Unify similar functions as possible as I can.
- G/C unused headers.
- Use #include <dev/rasops/foo.h> instead of "foo.h"
No particular functional changes intended.

Merge rasops_putchar_aa.h into rasops_putchar.h.
Support scaling underline dimensions by font height.

Stop allocating ri_buf and ri_stamp dynamically. As commented in
rasops.h, it is not safe to use kmem_alloc(9) in rasops_init();
rasops routines can be used for early putchar, which means that
UVM is not fully initialized.

Should fix a problem reported by macallan:
http://mail-index.netbsd.org/tech-kern/2019/08/02/msg025327.html

Instead of using ri_buf, inline function rasops_memcpy32() is
introduced to fill 32bit data efficiently.

Instead of using ri_stamp (per device stamp), stamp_ri is
introduced to distinguish for which device stamp is calculated.

Real fix for 24-bpp color:
- When centering screen, locate effective base address of framebuffer to
both word and 24-bit color boundary.
- Consistently convert ri_devcmap to ``big endian'' if not RI_BSWAP.

Also, fix possible bug for 15/16-bpp with RI_BSWAP (not tested).

Fix unaligned word write's to buffer, introduced in rev 1.42:
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/rasops/rasops24.c#rev1.42

Add general putchar functions for 2 and 4bpp.

Note that 1bpp continues to use its local version in rasops1.c,
which is much faster and simpler.

Factor out copy-paste. No functional changes.

Provide buffer capable of single-row pixels in order to make things simpler.

XXX
Bump kernel version for rasops_info later.

Switch to per-device stamp, and retire stamp_mutex.

XXX
Bump kernel version after other changes for struct rasops_info.

Misc clean-up's:
- protect private stuff in rasops.h by _RASOPS_PRIVATE
- staticify rasops_copycols() and rasops_isgray[]
- G/C unused extern int cold

Support shadow framebuffer for 24bpp screen.

Hmmm, color was still strange for 24bpp on little endian machine,
only when font width is 12.

We need to use different devcmap for that case, if we wish to share
codes for other depths/font widths as possible as we can.

XXX
What should we do for big endian? I have no big endian machines with
24bpp framebuffer...

Support anti-aliasing for depth 24.

Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.

Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.

Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.

Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.

Use unsigned integers for binary data storage.
No functional changes intended.

Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.

rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.

branches: 1.29.52; 1.29.54;
Fix RASOPS_SMALL build

autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation

branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h

branches: 1.21.2;
merge ktrace-lwp.

branches: 1.20.2;
avoid shadow variable "stamp"

nuke trailing whitespace

de-__P

branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Give initiali[sz]e all the "i"s it deserves.

branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.

branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds

Misplaced #endif.

Fix the unaligned accesses discovered by dbj.

- New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.

branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.

- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes

branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.

Remove crud remaining from userland mockup.

Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.

Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).

Fixed licensing due to a foobar on my behalf.

Initial import of 'rasops', the new raster operations set for wscons/rcons.

Hmmm, color was still strange for 24bpp on little endian machine,
only when font width is 12.

We need to use different devcmap for that case, if we wish to share
codes for other depths/font widths as possible as we can.

XXX
What should we do for big endian? I have no big endian machines with
24bpp framebuffer...

Support anti-aliasing for depth 24.

Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.

Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.

Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.

Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.

Use unsigned integers for binary data storage.
No functional changes intended.

Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.

rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.

branches: 1.29.52; 1.29.54;
Fix RASOPS_SMALL build

autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation

branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h

branches: 1.21.2;
merge ktrace-lwp.

branches: 1.20.2;
avoid shadow variable "stamp"

nuke trailing whitespace

de-__P

branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Give initiali[sz]e all the "i"s it deserves.

branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.

branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds

Misplaced #endif.

Fix the unaligned accesses discovered by dbj.

- New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.

branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.

- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes

branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.

Remove crud remaining from userland mockup.

Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.

Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).

Fixed licensing due to a foobar on my behalf.

Initial import of 'rasops', the new raster operations set for wscons/rcons.

Cast attr to uint32_t before right shift to avoid undefined behavior.

Also, misc style/cosmetic changes for clarity.

Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.

Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.

Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.

Use unsigned integers for binary data storage.
No functional changes intended.

Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.

rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.

branches: 1.29.52; 1.29.54;
Fix RASOPS_SMALL build

autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation

branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h

branches: 1.21.2;
merge ktrace-lwp.

branches: 1.20.2;
avoid shadow variable "stamp"

nuke trailing whitespace

de-__P

branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Give initiali[sz]e all the "i"s it deserves.

branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.

branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds

Misplaced #endif.

Fix the unaligned accesses discovered by dbj.

- New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.

branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.

- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes

branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.

Remove crud remaining from userland mockup.

Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.

Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).

Fixed licensing due to a foobar on my behalf.

Initial import of 'rasops', the new raster operations set for wscons/rcons.

Factor out putchar and width-optimized putchar functions into
rasops_putchar.h and rasops_putchar_width.h, respectively.

XXX
Possibly, we can do the same for putchar_aa functions. But it is
currently missing for 24-bpp.

Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.

Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.

Use unsigned integers for binary data storage.
No functional changes intended.

Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.

rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.

branches: 1.29.52; 1.29.54;
Fix RASOPS_SMALL build

autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation

branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h

branches: 1.21.2;
merge ktrace-lwp.

branches: 1.20.2;
avoid shadow variable "stamp"

nuke trailing whitespace

de-__P

branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Give initiali[sz]e all the "i"s it deserves.

branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.

branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds

Misplaced #endif.

Fix the unaligned accesses discovered by dbj.

- New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.

branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.

- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes

branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.

Remove crud remaining from userland mockup.

Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.

Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).

Fixed licensing due to a foobar on my behalf.

Initial import of 'rasops', the new raster operations set for wscons/rcons.

Provide and use FONT_GLYPH macro, tiny optimization version of WSFONT_GLYPH.

Misc cleen up:
- Make 32bit mask unsigned
- DPRINTF --> __nothing ifndef DEBUG_RASOPS
- "#ifdef DIAGNOSTIC if (x) panic(); #endif" --> KASSERT(!x);
- KNF

No functional changes intended.

Use unsigned integers for binary data storage.
No functional changes intended.

Style:
- u_char --> uint8_t
- u_int*_t --> uint*_t

No functional changes.

rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.

branches: 1.29.52; 1.29.54;
Fix RASOPS_SMALL build

autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation

branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h

branches: 1.21.2;
merge ktrace-lwp.

branches: 1.20.2;
avoid shadow variable "stamp"

nuke trailing whitespace

de-__P

branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Give initiali[sz]e all the "i"s it deserves.

branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.

branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds

Misplaced #endif.

Fix the unaligned accesses discovered by dbj.

- New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.

branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.

- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes

branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.

Remove crud remaining from userland mockup.

Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.

Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).

Fixed licensing due to a foobar on my behalf.

Initial import of 'rasops', the new raster operations set for wscons/rcons.

rasops reused wscons attribute bits for internal control.
- make upper 4 attribute bits available for such use
- use wscons flag names instead of literal constants.

branches: 1.29.52;
Fix RASOPS_SMALL build

autogenerate box drawing characters for fonts that don't have them, put them
into an alternate font pointed at by the recently added mappings in wsfont,
adapt all putchar() methods except the rotated ones to use them
XXX no attempt has been made to make this work with rotation

branches: 1.27.2; 1.27.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.25.8; 1.25.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.24.36; 1.24.38; 1.24.40;
fix fallout from caddr_t changes.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.22.24;
Make almost everything #include <sys/bswap.h> instead of <machine/bswap.h>
The bswap.h and endian.h files are all rather incestuous, but I want to
get the constant folding stuff into one place - sys/bswap.h

branches: 1.21.2;
merge ktrace-lwp.

branches: 1.20.2;
avoid shadow variable "stamp"

nuke trailing whitespace

de-__P

branches: 1.17.6; 1.17.14; 1.17.16;
compiler warning.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Give initiali[sz]e all the "i"s it deserves.

branches: 1.13.4; 1.13.6; 1.13.8;
Use my proper name.

branches: 1.12.2;
* Spell shift counts in decimal and masks in hex
* Optimize numerous array references
* Cleanup whitespace turds

Misplaced #endif.

Fix the unaligned accesses discovered by dbj.

- New option (RASOPS_SMALL) for the tight-fisted.
- Don't use int32_t/u_int32_t unless we must.
- Remove C++ single line comment delimeters that crept in.
- Remove defs pertaining to byte granularity 'ragged-edge' bitmasks.
- Move all declarations of per-depth initialization functions to rasops.h.
- Other minor cleanup.

branches: 1.8.2; 1.8.4; 1.8.6;
When clearing the entire display, point to the start of the framebuffer,
not start of console output. Also, do not advance by ri_delta every row.

- Change the semantics of rasops_init slightly
- Re-name rasops_setfont to rasops_reconfig
- Add some new run-time 'features'
- Bring all run-time 'features' under control of rasops_info::ri_flg
- Some cosmetic changes

branches: 1.6.2;
Assign ownership & copyright to TNF. There is probably a procedure for this
that I am unaware of. Also some KNF.

Remove crud remaining from userland mockup.

Innumerable fixes and improvements. README contains list of remaining bugs
that need to be squashed.

Code cleanup. Add ri_bswap member to 'struct rasops_info' to indicate that
framebuffer endianness differs from CPU (for 15,16,32-bit displays).

Fixed licensing due to a foobar on my behalf.

Initial import of 'rasops', the new raster operations set for wscons/rcons.