Mark some locale tests as XFAIL on debian and opensuse.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@222513 91177308-0d34-0410-b5e6-96231b3b80d8
Handle extra whitespace in linux distribution name.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@222514 91177308-0d34-0410-b5e6-96231b3b80d8