Correctly propagate defaultedness across template instantiation. This
fixes PR9965, but we're not out of the water yet, as we do not
successfully handle out-of-line definitions, due to my utter
misunderstanding of how we manage templates.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131920 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed