do the reverse complement directly in 2 bits

scripts/development/run-argonnite-1-28.sh
21m33.976s
71deaa88265222cd8c27c88980eb5c4f29c966af coverage_distribution.txt-canonical

Link: https://github.com/GeneAssembly/biosal/issues/371
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>