uClibc support patch

[Benjamin Kosnik]

> I'll put libstdc++/14939 in libstdc++-v3/ChangeLog, target/20353 and 
> target/24578 in gcc/testsuite/ChangeLog and target/20353, target/24578 and 
> target/24837 in gcc/ChangeLog.

Great, libstdc++/14939 was what I was looking for.
 
> The libstdc++-v3 changes don't depend on the core compiler changes so they 
> could go in now on their own, but they aren't particularly useful without 
> the core compiler changes either so I'd rather wait for those to be 
> reviewed instead of putting the patch in piecemeal.

At your leisure.

-benjamin