thorium: report traffic reduction with -print-thorium-data

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
thorium: don't print epoch-only runtime information

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: fix spate launcher for Blue Gene/Q

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: add spate launcher for Iowa Native Prairie Soil

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
tests: add -print-thorium-data in Blue Gene/Q template

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>