If an import directive was put into wrong context, the error message was obscure,
complaining on misbalanced braces. To get more descriptive messages, annotation
tokens related to modules are processed where they must not be seen.
Differential Revision: http://reviews.llvm.org/D11844
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@248085 91177308-0d34-0410-b5e6-96231b3b80d8
Serge Pavlov