Toolchains and root filesystem images for svn 23721.

[Rob Landley]

I built some cross compilers and some root filesystem images against last 
night's uClibc and uploaded them to http://busybox.net/~landley/fwl

Just FYI.  The cross compilers just extract and add the "bin" subdirectory to 
your $PATH, the images kind of assume you have qemu 0.9.1 installed. :)

Sparc doesn't work due to a known bug I have to fix, m68k and sh4 need more 
work in qemu to quite be able to run those platforms, and arm needs two svn 
commits reverted in order to work.  I built a fixed version of armv4l to show 
the difference reverting those commits makes.  The others (x86, x86-64, 
powerpc and mips) and such should work fine, extract the appropriate 
system-image tarball and ./run-emulator.sh.  Type "exit" when done.

I can set up a cron job to build these out of every night's uClibc snapshot, 
if you like...

Rob