(Only the first 10 of 13 ports in this commit are shown above. )
Update libc++ to r208080
Fix build on FreeBSD 8.4 by using devel/libmissing and new devel/xlocale
Add devel/xlocale which is a striped down version of freebsd's xlocale with just
requirements for libc++, initially maintained in libc++'s trunk for solaris
Add llvm's libc++ stdc++ library, which supports c++11.
This is for 9.1-stable so ports can use it. libc++ isn't build by default in
Borrow some code from the llvm/clang -devel ports for generating svn checkout