Add package_barrnap_0_2 derived from http://toolshed.g2.bx.psu.edu/view/simon-gladman/barrnap

Originally written by Simon Gladman <simon.gladman@monash.edu>
Add package_prodigal_2_60 derived from http://toolshed.g2.bx.psu.edu/view/edward-kirton/prodigal

Originally written by Lionel Guy <lionel.guy@icm.uu.se>
Update Prodigal tgz URL.
Merge pull request #15 from nsoranzo/master

2 new orphan tool dependencies for iuc