Summary:
The multiprocess module uses pickling to transfer
information between processes and does not know how to pickle
the class created in the lit.cfg file and thus the example
fails.
Implement ManyTests in a separate file and import for the
example test passes
Patch by Nathan Lanza <nathan@lanza.io>
Differential Revision: https://reviews.llvm.org/D51328
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342269 91177308-0d34-0410-b5e6-96231b3b80d8
