libc/eglibc: backport OpenEmbedded patches for eglibc 2.16

With this 3 patches, I was able to build and run an eglibc-based system
on MIPS(el) and ARM targets.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

 reporter_name="Harold Grovesteen"

 reporter_url="http://sourceware.org/ml/crossgcc/2009-11/msg00052.html"

 reporter_comment=""