Added some extra files to facilitate downstream analyses

fasta2phylip.py converts the MAFFT alignments into relaxed phylip format so
that they're ready to be analyzed by RAxML.

graphs2gml.py combines each BLAST graph and the corresponding MCL clusterings
into a variety of popular graph file formats. The files are compressed to save
space. The GML files are the ones I found to work best with Cytoscape, hence
the bias in the program name.

Signed-off-by: Ted Gibbons <ted.codes@gmail.com>