Implement stronger check for correct distribution when targetting Ubuntu or Debian (i.e. make sure dist_name is correct).

I hosed a precise VM a few weeks ago because quantal was being targetted and I have a collaborator who just did the same. This should prevent that.
Merge pull request #71 from jmchilton/stronger_check

Ensure dist_name is correct.
Move to latest CRAM release. Fixes chapmanb/bcbio-nextgen#4
Ignore distribution checks for specialized usage of CloudBioLinux like installing libraries or custom packages
Update to latest bcbio.variation
Correctly load CloudBioLinux editions and flavors for distribution checks when doing data loading, fixes chapmanb/bcbio-nextgen#6 Thanks to @cbergman
Provide samtools build that is safe on systems lacking ncurses. Thanks to @arq5x
Correctly test for samtools being present on the system before installing
Remove potentially truncated previously downloaded files for biodata extraction. closes chapmanb/bcbio-nextgen#7
Move to latest versions of novoalign and novosort: V3
Remove gatk gsalib installation approach until we can make into a proper R package. closes chapmanb/bcbio-nextgen#8
Progress towards running local commands without using ssh, directly on filesystem. Generalize run and exists functions and apply to tabix and grabix as testing examples. Partial improvements for arq5x/gemini#110
Finalize local builds for all gemini components (samtools, bedtools, grabix, tabix). These no longer require ssh for local builds and framework in place to extend to other tools. fixes arq5x/gemini#110
Add local-safe functions to avoid running ssh commands with custom-only installs using a flavor
Add build packages based on suggestions from Galaxy IUC. Thanks to Ira Cooke
Correctly handle checking distribution when running in local mode
More fix for local running: setting up temporary directory. Plus automation for postfix
Avoid writing to biolinux log which can cause permission issues in local mode depending on /var/log setup
Updates to PeptideShaker and SearchGUI.
Proteomics: Update to peptideshaker/searchgui.