Bug#666539: clang: Fails when trying to include chrono from C++11

[Manuel Bellersen]

On the clang page there is said
"Patches are needed to make libstdc++-4.4
(http://clang.llvm.org/libstdc++4.4-clang0x.patch) and libstdc++-4.7
(http://clang.llvm.org/libstdc++4.7-clang11.patch) work with Clang in
C++11 mode." (http://clang.llvm.org/cxx_status.html)

There is also a bug-report on clang for this saying that this patches
should do it:
http://llvm.org/bugs/show_bug.cgi?id=12893

Hope that helps.