Added support for pre-defined column defn's (e.g., sam, bed, vcf)#1

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arq5x wants to merge 8 commits intolh3:masterfrom

Commits on Dec 28, 2011

Support pre-defined col. defns' for genomics
Aaron Quinlan
committed
cleanup
Aaron Quinlan
committed
fixed VCF id column.
Aaron Quinlan
committed
report headers for sam (^@) and vcf (^#)
Aaron Quinlan
committed

Commits on Dec 29, 2011

force FS and OFS to tab iff [bed\|bedgraph\|vcf\|sam\|etc]
Aaron Quinlan
committed
support GFF and GFF, allowing for group or attribute as the 9th column
Aaron Quinlan
committed
remove comment
Aaron Quinlan
committed

Commits on Jan 2, 2012

full bed def'n & "-c help"
arq5x
committed