Track a class template specialization's point of instantiation separately
from its location.  Initialize appropriately.

When implicitly creating a declaration of a class template specialization
after encountering the first reference to it, use the pattern class's
location instead of the location of the first reference.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81515 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed