Update linux test results

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@215884 91177308-0d34-0410-b5e6-96231b3b80d8
Add standard version to lit.cfg's available features

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@215885 91177308-0d34-0410-b5e6-96231b3b80d8