Hack Travis-CI to have MPICH bottle use gcc 6 libs
Hack Travis-CI to have MPICH bottle use gcc 6 libs

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