biopython/biopython — pull request #315 by saketkc (2014-04-29 12:43:36+00:00)
Title: Skip tests for 'bwa aln' when 'aln' is unrecognized

As reported on http://lists.open-bio.org/pipermail/biopython-dev/2014-April/011342.html
the tests are now skipped if 'bwa aln' is unrecognized