[uapp][gfxtest] Migrate gfxtest to framebuffer lib

Change-Id: Id25a6c0c5a205bf7c0498de6c75f23f23521ca75

[api] more pixel format unification

- Use ZX_PIXEL_FORMAT_* everywhere and remove the old
DISPLAY_FORMAT_* and GFX_FORMAT_* aliases.
- Use ZX_PIXEL_FORMAT_MONO_8 for 8bpp grayscale consistently
- simplify some pixel format to bpp/Bpp processing

Change-Id: Ic97650a637814a20534af9a1b45fc6ef17d62362

[zx] Magenta -> Zircon

The Great Renaming is here!

Change-Id: I3229bdeb2a3d0e40fb4db6fec8ca7d971fbffb94

[bootloader][virtcon][font] unify font headers

No reason to hang on to two identical copies of these bitmap fonts.

This will make it easier to switch the kernel to these fonts as well.

Change-Id: Ied1fcb907f4299a8c4c29e5e2fb8c3c723c064e8

[ulib][status] Use the MX_OK and MX_ERR_* mx_status_t names

Change-Id: I3ba531de766b559b8922fb4910715c630efc9b82

[gfx] Cleanup: Add "const" to font data

This moves the data to the read-only data segment. Moving data out of
the writable data segment can potentially save a little memory by
reducing fragmentation of global variables that are modified via
copy-on-write.

Change-Id: I51d9496114093a32c7458ccaf6067b13936fc125

[system] Move system/* includes to magenta/* under global.

Change-Id: I9b8673a16162da3bd1328a2eae3fbd855f1a7730

[ulib][gfx] Fix off-by-one in copyrect functions

Change-Id: I6aef9dd3b0390cfee4cc3921c9b4b28f720be43b

[magenta] unify pixel/display format throughout userspace

Change-Id: I73888fe8480f9215910aee1dd752d8bd587af9e4

[system] align license and license banners with Fuchsia

This adjusts the Magenta userspace code to match the prevailing
license in Fuchsia (three-clause BSD), using the same banner
and license text.

Change-Id: I6b6d79435c5dbaa32027888874849e4f47aaa7be

[ulib][gfx] gfx_copylines() for faster updates

This provides a faster path for copying to the same surface or
a surface with same stride and pixel format.

Change-Id: I7ae7eddb7b5e93a9747851731943102fbf53d4e2

[ulib][gfx] integrate draw character support w/ gfx_putchar()

Less overhead than the old font code that called putpixel
on each pixel of the character being drawn.

For gfxconsole repainting kilo on skylake NUC, this cut
repaints from ~11.9ms to ~5.2ms. That time does include
the off-to-on blits as well, the cost of which has not
changed.

An experimental hack to hold invalidates until after
the vt100 engine processes all characters took it down
to ~4ms.

Change-Id: I214e6b597205d71a0b96735e6cb5490e1ae79da8

[magenta] Replace use of sys/types.h with stdint.h

sys/types.h is a POSIX header files and is not a part of C
standard. There are number of defines in sys/types.h which are
guarded by either _GNU_SOURCE or _BSD_SOURCE. We should be using
stdint.h and stddef.h instead which are C standard equivalents.

Change-Id: Idd9642504140a59079f07ab8e487f94b1f5b4cf5

[ulib] Introduce header-only ulib/system

Change-Id: Iaa08b2149294bab157e95f480fe8f8c0765eae2e

[system] clang-format all of userspace

Change-Id: I6bb6a9187a4af83ca5c0656f05d89aa3a09fa5fa

[magenta] Initial commit