Adding top-level CMakeLists.txt edit to run the collectives test.
Adding top-level CMakeLists.txt edit to run the collectives test.

sourceryinstitute/opencoarrays,zbeekman/opencoarrays,sourceryinstitute/opencoarrays,zbeekman/opencoarrays,jerryd/opencoarrays,jerryd/opencoarrays,jerryd/opencoarrays,zbeekman/opencoarrays,sourceryinstitute/opencoarrays