Security update for glibc (important)

This update for glibc fixes the following issues: - errorcheck-mutex-no-elision.patch: Don't do lock elision on an error checking mutex boo956716, BZ 17514 - reinitialize-dlloadwritelock.patch: Reinitialize dlloadwritelock on fork boo958315, BZ 19282 - send-dg-buffer-overflow.patch: Fix getaddrin...