[test-suite] Adding CoMD Proxy App

CoMD is a reference implementation of typical classical molecular dynamics
algorithms and workloads.  This is a serial build for the test-suite with eam
potential.

Link:
https://github.com/exmatex/CoMD

Reviewers: Meinersbur

Differential Revision: https://reviews.llvm.org/D55726

llvm-svn: 352375
40 files changed