Update biopython flavor to install emboss/blast+ from packages instead of brew. No longer try to keep fully isolated and use sudo for packages
Allow HEAD formulas with homebrew integration. Enable seqtk for bcbio-nextgen installation
Update GATK protected to latest version and fix anonymous access to download MIT version
Install system packages if run as root user
Merge branch 'master' of github.com:chapmanb/cloudbiolinux