Port uClibc patches to 0.9.30.2

Some patches from 0.9.30.1 now applied upstream. The reminder have
been only slightly modified to apply cleanly to the new base.

Signed-off-by: Joachim Nilsson <jocke@vmlinux.org>

 reporter_name="unknown"

 reporter_url="http://iphonelinux.org/index.php/Glibc_toolchain_using_crosstool-NG"

 reporter_comment="An (experimental) toolchain targeting the Apple's iPhone."