CFG: Properly print delegating initializer CFG elements.

...rather than segfaulting.

Patch by Enrico P!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193208 91177308-0d34-0410-b5e6-96231b3b80d8
Teach AST dumper to dump the containing module and hidden flag for declarations.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193210 91177308-0d34-0410-b5e6-96231b3b80d8