[PATCH 2/3 v4] Process record support for PowerPC

[Wei-cheng Wang]

I've got the commit access.
Ok to commit now? :)

[1/3] Epilogue unwinder for PowerPC
https://sourceware.org/ml/gdb-patches/2014-12/msg00165.html
[2/3] Reverse debugging for PowerPC
https://sourceware.org/ml/gdb-patches/2014-12/msg00629.html
[3/3] Skip-trampoline for reverse-stepping
https://sourceware.org/ml/gdb-patches/2014-12/msg00487.html

Thanks,
Wei-cheng