Note: this is primarily for use with two files with mostly disjoint annotations. It views "SB=2.5" as a different info field than "SB=2.2" and so will output as info "SB=2.5;SB=2.2". That is, it compares the full field string, rather than only the field name.
Usage:
./mergeVCFInfoFields I=[comma-delimited list of files] O=[output file]
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@2176 348d0f76-0448-11de-a6fe-93d51630548a