Rename SourceLocation::getFileID to getChunkID, because it returns
the chunk ID not the file ID.  This exposes problems in 
TextDiagnosticPrinter where it should have been using the canonical
file ID but wasn't.  Fix these along the way.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62427 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed