Avoid checking for freec installation if not a supported platform. Fixes chapmanb/bcbio-nextgen#124
Avoid checking for freec installation if not a supported platform. Fixes chapmanb/bcbio-nextgen#124

AICIDNN/cloudbiolinux,AICIDNN/cloudbiolinux,joemphilips/cloudbiolinux,pjotrp/cloudbiolinux,rchekaluk/cloudbiolinux,heuermh/cloudbiolinux,joemphilips/cloudbiolinux,heuermh/cloudbiolinux,kdaily/cloudbiolinux,rchekaluk/cloudbiolinux,joemphilips/cloudbiolinux,rchekaluk/cloudbiolinux,pjotrp/cloudbiolinux,pjotrp/cloudbiolinux,kdaily/cloudbiolinux,lpantano/cloudbiolinux,lpantano/cloudbiolinux,kdaily/cloudbiolinux,kdaily/cloudbiolinux,averagehat/cloudbiolinux,averagehat/cloudbiolinux,chapmanb/cloudbiolinux,pjotrp/cloudbiolinux,lpantano/cloudbiolinux,elkingtonmcb/cloudbiolinux,elkingtonmcb/cloudbiolinux,AICIDNN/cloudbiolinux,joemphilips/cloudbiolinux,averagehat/cloudbiolinux,rchekaluk/cloudbiolinux,averagehat/cloudbiolinux,elkingtonmcb/cloudbiolinux,heuermh/cloudbiolinux,AICIDNN/cloudbiolinux,chapmanb/cloudbiolinux,heuermh/cloudbiolinux,chapmanb/cloudbiolinux,elkingtonmcb/cloudbiolinux,chapmanb/cloudbiolinux