use CONFIG_PAMI=y to build with PAMI support

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
move performance app in performance/

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add function to get command line argument integer value

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
new option -maximum-buffer-size for performance tool

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add option -event-count for transport tool

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add option -concurrent-event-count to transport tool

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