Downgrade the error about rvalue references to an extension warning
and turn on __has_feature(cxx_rvalue_references). The core rvalue
references proposal seems to be fully implemented now, pending lots
more testing.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124169 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed