libc/eglibc: Make eglibc 2.11 and 2.12 not experimental

I haven't noticed the usual experimental testers complain about eglibc
2.11 or 2.12 being unstable. So stop marking them as experimental.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>

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."