[PATCH v2 1/2] manual/memory.texi: Bring aligned allocation docs up to date.

[Paul Eggert]

This version of the patch suggests posix_memalign,
and doesn't mention aligned_alloc at all.  The documentation
should suggest aligned_alloc first, and posix_memalign second.
aligned_alloc is the better interface and is part of C11 so it'll
be available on more platforms eventually; posix_memalign
is also worth mentioning as it's available on more platforms
now.