Added BLAST task options "*-fast"

Added to `tblastn', `blastp' and `blastx'. Due to recent release of
BLAST+ 2.2.30.
BLAST+ 2.2.30 added three new options to psiblast
Handle new options in BLAST+ 2.2.30 (issue #399)
PEP8 tweaks to test_NCBI_BLAST_tools.py