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
rose app-run: fix poll delays default
Update CHANGES.md
Merge pull request #927 from benfitzpatrick/rose-app-run.fix-poll-delays-default

rose app-run: fix poll delays default
Update CHANGES.md