Move the setup for variables that are expanded in the lit.site.cfg into
a dedicated helper function. This will enable re-using the same logic
for Clang's lit setup, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159333 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed