Merge git://oak/home/sfr/kernels/iseries/work

arch/powerpc/kernel/Makefile

arch/powerpc/kernel/ppc32.h

arch/powerpc/kernel/signal_32.c

arch/powerpc/kernel/signal_64.c

arch/ppc64/kernel/Makefile

include/asm-powerpc/ptrace.h

include/asm-powerpc/sigcontext.h

include/asm-powerpc/stat.h

include/asm-powerpc/ucontext.h

include/asm-ppc/ptrace.h

include/asm-ppc/sigcontext.h

include/asm-ppc/stat.h

include/asm-ppc64/stat.h

include/asm-ppc64/ucontext.h