Pass context and access to Parser::ParseExplicitInstantiation() for
good parser error recovery and for not crashing.

We still have a accepts-invalid-code bug.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147216 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed