+ GroupIntervals allows user-defined scattering (e.g. take an interval list file, split it into k smaller interval list files by number of lines)
+ ExpandIntervals expands the intervals, either by widening them, or allowing the definition for nearby intervals (e.g. flanks starting 1bp before and after, ending 10bp after that)
+ IntersectIntervals takes n interval lists, writes 1 interval list that is the n-way intersection of all of them
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4885 348d0f76-0448-11de-a6fe-93d51630548a