llvm-svn: 350932

Summary:
Add cmake and lit files needed to run these tests as an
external project.  Also, copy test_debuginfo.pl from llvm/utils since
it's only used here.  The copy in llvm/utils must be maintained as
long as bots continue to include debuginfo-tests in clang/test.

This patch depends on clang patch https://reviews.llvm.org/D41055.

Reviewers: zturner, aprantl

Reviewed By: aprantl

Subscribers: mgorny, llvm-commits, JDevlieghere

Differential Revision: https://reviews.llvm.org/D40971

llvm-svn: 320495

Patch by Eitan Adler.

llvm-svn: 282494

llvm-svn: 275409

llvm-svn: 205696

llvm-svn: 169085