[BRLTTY] BRLTTY in GRUB2

[Dave Mielke]

charset, hostcmd, and mount have now been split into platform-dependent 
packages.

There's now a sys_grub.c, as well as a skeleton grub screen driver.

autogen.sh and configure have now been run. Here are the next set of errors in 
my simulated grub build environment that I'd appreciate your thoughts on. The 
first is that stdio.h (in posix_wrap/include) includes misc.h (in 
include/grub), which includes stdarg.h, which doesn't seem to exist. The second 
set are a bunch of PACKAGE_xxx redefines.

configure:17223: gcc -c -g -O2 -std=gnu99 -Wall -ffreestanding -nostdinc -nostdlib  -DGRUB_RUNTIME -I/home/dave/brltty/projects/grub/grub -I/home/dave/brltty/projects/grub/grub/grub-core/lib/posix_wrap/include -I/home/dave/brltty/projects/grub/grub/include conftest.c >&5
In file included from /home/dave/brltty/projects/grub/grub/grub-core/lib/posix_wrap/include/stdio.h:22,
                 from conftest.c:79:
/home/dave/brltty/projects/grub/grub/include/grub/misc.h:23:20: error: stdarg.h: No such file or directory
In file included from /home/dave/brltty/projects/grub/grub/config.h:9,
                 from /home/dave/brltty/projects/grub/grub/include/grub/types.h:22,
                 from /home/dave/brltty/projects/grub/grub/include/grub/misc.h:24,
                 from /home/dave/brltty/projects/grub/grub/grub-core/lib/posix_wrap/include/stdio.h:22,
                 from conftest.c:79:
/home/dave/brltty/projects/grub/grub/config-util.h:1042:1: warning: "PACKAGE_BUGREPORT" redefined
conftest.c:6:1: warning: this is the location of the previous definition
/home/dave/brltty/projects/grub/grub/config-util.h:1045:1: warning: "PACKAGE_NAME" redefined
conftest.c:2:1: warning: this is the location of the previous definition
/home/dave/brltty/projects/grub/grub/config-util.h:1048:1: warning: "PACKAGE_STRING" redefined
conftest.c:5:1: warning: this is the location of the previous definition
/home/dave/brltty/projects/grub/grub/config-util.h:1051:1: warning: "PACKAGE_TARNAME" redefined
conftest.c:3:1: warning: this is the location of the previous definition
/home/dave/brltty/projects/grub/grub/config-util.h:1054:1: warning: "PACKAGE_VERSION" redefined
conftest.c:4:1: warning: this is the location of the previous definition

-- 
Dave Mielke           | 2213 Fox Crescent | The Bible is the very Word of God.
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