Follow-up on PowerPC optimization patches

[Adhemerval Zanella]

I have sent two patches for PowerPC related to optimization for str[n]casecmp and 
nearbyint[f]:

http://sourceware.org/ml/libc-alpha/2011-11/msg00078.html
http://sourceware.org/ml/libc-alpha/2011-11/msg00108.html

For str[n]casecmp PowerPC maintainer (Ryan) already gave an OK, and I will talk with 
him about the nearbyint[f] patch. Any other feedback about the patches? Any advice or
request I should do to allow the merge?