VCFSTATS: Extracted the code from global Stats and created a new class
VCFSTATS: Extracted the code from sample Stats and created a new class
VCFSTATS: Extracted the code from sample group Stats and created a new class
VCFSTAST: Renamed Class VcfSampleGroupStast
VCFINDEX: Added initial code for INDEX. Added the bgzip, tabix and indexer binaries