The tests `CodeGen/aapcs[64]-align.cc` are not run since files with a `.cc`
suffix aren't recognisze as tests. This patch renames the above two files to
`.cpp`.
Differential Revision: https://reviews.llvm.org/D46013
Comitting as obvious.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@339766 91177308-0d34-0410-b5e6-96231b3b80d8
Momchil Velikov