Document that mmap() returns MAP_FAILED on error, as per the POSIX standard.
Acknowledge that fnmatch can fail. Fixes bug 14029.
Make strptime %Z consistent between doc and code. Fixes bug 14876
Changelog for last commit.
Fix gethostbyname_r example. Fixes bug 2801.
PowerPC: strcpy/stpcpy optimization for PPC64/POWER7

This patch intends to unify both strcpy and stpcpy implementationsi
for PPC64 and PPC64/POWER7. The idead default powerpc64 implementation
is to provide both doubleword and word aligned memory access.

For PPC64/POWER7 is also provide doubleword and word memory access,
remove the branch hints, use the cmpb instruction for compare
doubleword/words, and add an optimization for inputs of same alignment.
Add some more NEWS items.