Make CXXScopeSpec invalid when incomplete, and propagate that into any
Declarator that depends on it.  This fixes several redundant errors and bad
recoveries.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100779 91177308-0d34-0410-b5e6-96231b3b80d8
20 files changed