Ensure gemini VCF database passed along in final output directory if batch only has a single member. Cache gemini output stats to avoid needing to re-calculate when re-running analyses
Handle issues with symlinking files: detect, recover and do explicit copy. Works around bug on Lustre filesystems with 60 character file names. Fix update of snpEff databases for more edge cases
Merge branch 'master' of https://github.com/chapmanb/bcbio-nextgen