* Patched crt0 to support a pre_main
* pre_main sets up environment variables, can do other things later,
but then just jumps to main with the same arguments.
* Updated a bunch of apps to pass environment variables around.
* Remove old login background [unused]
* Remove glock (graphical lock) [outdated]
* Have toolchain/activate set pkg-config variables
XXX: You will have unset PKG_CONFIG_LIBDIR to configure native
software if you have activated the toolchain! Otherwise, your
pkgconfig information will be incorrect.
* Fixed a bug in the compositor where we would give window stack order 0
to applications that didn't ask for it because depths were assigned by
wid which starts at 0. Make it start at 1 instead, no chance of an app
getting the wrong stack order (this shoudn't have any effect on how
things work with a login app, since it grabs wid 0; but if you boot
directly into a non-login environment, minor timing issues can do odd
things.)
* Also some minor updates to the toolchain in general.
* Replacing the old bitmap wallpaper (not the actual wallpaper, but the
terminal one) with a fresh new wallpaper as a PNG.
* Finally bring syscall.h up to speed and include all syscalls in the
syscall module of the C library.
* Remove the third-party obfuscated C demos (we have nyancat, good
enough)
* Fix userspace apps to build without complaining about undeclared
strtok_r by disable __STRICT_ANSI__
* Fix .eh_frame by including the proper stuff with libgcc.
