Added source location for the template keyword in DependentTemplateSpecializationTypeLoc nodes (DTSTLoc).

The new info is propagated to TSTLoc on template instantiation, getting rid of 3 FIXMEs in TreeTransform.h and another one Parser.cpp.

Simplified code in TypeSpecLocFiller visitor methods for DTSTLoc and DependentNameTypeLoc by removing what now seems to be dead code (adding corresponding assertions). 

git-svn-id: 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed