one space missing above, but that's not the reason for reviewing this: ;-)

You'd really do many others a favor, if you make this compatible with `Boost/1.51.0-goolf-1.4.10-Python-2.7.3`;
this would make it mergeable within bigger pipelines, if need be, like `HPCBIOS_Bioinfo/20130829-goolf-1.4.10`,
or other future ones that new fellows may need.

But I see you go direction Python/2.7.5 below, so I am inclined to ask: 
did you hit a bug somewhere and picked those versions?