Add CloudABI locale names to platform_support.h.
Add CloudABI locale names to platform_support.h.

On CloudABI we should append the timezone name to the end of the locale
(e.g., nl_NL.UTF-8@Europe/Amsterdam). By fixing the locale names we can
already let a lot of locale related tests pass.


git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@231649 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx