rose_arch: fix directory source
Merge pull request #925 from matthewrmshin/fix.rose_arch.comma

rose_arch: fix directory source
rose mpi-launch: fix unbound ROSE_LAUNCHER_BASE
Merge pull request #926 from matthewrmshin/fix.rose-mpi-launch.unbound.base

rose mpi-launch: fix unbound ROSE_LAUNCHER_BASE
Merge branch 'master' into rose-bush