use fifo for message queuing

Link: https://github.com/GeneAssembly/biosal/issues/21
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add a script to check coding style

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

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
fix bsal_node_receive and work indentation

Link: https://github.com/GeneAssembly/biosal/issues/23
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>