[PATCH] [libcxx] Update the way the -std= flag is chosen by CMake and LibcxxTestFormat

[Reid Kleckner]

>>! In D4329#18, @mclow.lists wrote:
> I'm fine with dropping the ability to build libc++ with a C++03 compiler.
> [ I'm *not* fine with dropping the ability to use libc++ from c++03 code ]
> 
> Responsible opposing viewpoints... ?

Albert, is the Android NDK version of GCC new enough?

http://reviews.llvm.org/D4329