Add some tests for reference-collapsing and referencing binding
involving rvalue references, to start scoping out what is and what
isn't implemented. In the process, tweak some standards citations,
type desugaring, and teach the tentative parser about && in
ptr-operator.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123913 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed