Guess genome name for building compressed mapping counts from genomesize.xml

Guess genome name for building compressed mapping counts from genomesize.xml
The HiSeq pipeline creates a file that has the sizes of the genomes
that it mapped the particular project to, figuring out the genome
version from that is a lot easier than dealing with all the random
possible file names for the config files.

This patch is lacking in that I just hard coded a few genomes
I probably need some mechanism for pulling it from a database.