Fix targets bwa, fastqc, picard, blast

The bwa target had issues with a path and it does not need 'make'.  The
fastqc target would fail if called twice.  The picard target is supposed
to be called picard-tools.  The blast target is supposed to be called
ncbi-blast.
Merge pull request #1 from b4winckler/master

Fix targets bwa, fastqc, picard, blast