devel/libuuid: fix
mk/compiler/gcc.mk: retire gcc prefix redefine.

This was added back in 2004 but seems now actively harmful as it doesn't
propery handle multilib installs.
Merge branch 'joyent/feature/multiarch/2014Q2' into joyent/release/2014Q2_multiarch

Conflicts:
	mk/compiler/gcc.mk