Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Convert files to UTF-8 and add some copyright markers where missing.

Quiet down clang -Werror.

Reported by: Pawel Worach
Approved by: jhb (mentor)

Integrate the line drawing algorithm from the book "Graphic Gems 1".

http://www.graphicsgems.org/

At the time it claimed to be 3-4 times faster than the traditional
algorithm.

PR: 18769
Approved by: jhb (mentor)
MFC after: 2 weeks

Change libvgl's set4pixels() and set2lines() functions from plain
'inline' to 'static inline'. Otherwise, a C99 compiler (such as clang)
will output an undefined symbol for those functions in the resulting
object file. (Even gcc will do this, when you use "-std=c99".)

This should fix the "undefined reference to `set4pixels'" errors that
some people were seeing during ports building, when their world was
compiled with clang.

Approved by: rpaulo (mentor)

Fix typo in the BSD copyright: s/withough/without/

Spotted and suggested by: des
MFC after: 3 weeks

Implement __FBSDID()

Add Truecolor 16 and 32bits support. Note that 24bits modes are not
supported since it's not easy to put 3 bytes accross 64Kb windows
of memory. This should not be such a problem with linear framebuffers.

There is no major interface modification except that the color type
becomes u_long instead of byte. So one just need to recompile his
application.

Approved by: Soren Schmidt <sos@freebsd.dk>

Initiate deorbit burn sequence for <machine/console.h>.

Replace all in-tree uses with necessary subset of <sys/{fb,kb,cons}io.h>.
This is also the appropriate fix for exo-tree sources.

Put warnings in <machine/console.h> to discourage use.
November 15th 2000 the warnings will be converted to errors.
January 15th 2001 the <machine/console.h> files will be removed.

- This is the new version of libvgl jointly developed by sos and I.
It adds new functions and extend some structures and can handle
VESA modes.
- Update the man page.
- Bump the library version number.

(The old version will be added to compat3x.)

$Id$ -> $FreeBSD$

Assorted bug fixes.

keyboard.c
- Call tcsetattr() in VGLKeyboardEnd() to restore tty, only when
tty attributes have been previously saved.
PR: misc/9524
Submitted by: Katusyuki 'kei' Maeda (kei@nanet.co.jp)
- Set up the tty raw mode correctly.

main.c
- Restore VESA_800x600 raster text mode correctly in VGLEnd().
Submitted by: des

text.c
- Allocate the correct size of a font buffer in VGLSetFontFile().
I forgot the submitter ;-(

simple.c, bitmap.c
- Fix address calculation for the VGA mode X in VGLGetXY() and
VGLBitmapCopy().
- Fix typo (dsty -> dstx) in __VGLBitmapCopy().

Reviewed by: sos

First import of my little "video graphic library".

See the manpage vgl.3 for more info.

A little example will follow shortly.