Update to hg 3243:9838aecd6340
Merge branch 'official' into cctools-llvm

Conflicts:
	config/cc/gcc.in
	config/kernel/linux.in
	samples/armeb-unknown-linux-uclibcgnueabi/crosstool.config
	samples/mips-unknown-linux-uclibc/crosstool.config
	samples/powerpc-e500v2-linux-gnuspe/crosstool.config
	samples/powerpc64-unknown-linux-gnu/crosstool.config