apps like openssh to cross compile.  This eliminates the need for
the magic ld-uClibc.so.0 symlink in /lib

 -Erik

building a bootstrapping toolchain.

build a gcc toolchain to bootstrap the system and instead
want to use uClibc's gcc wrapper.

directory we do not need to rebuild the toolchain (which now is built under
'toolchain_build').  Should help prevent a bunch of unnecessary toolchain
rebuilds.
 -Erik