improvements to vcfentropy
Merge branch 'master' of github.com:ekg/vcflib
add vcfremovenonATGC, sample to info aggregator (vcfsample2info)
fix argument sanity check when -s is specified
Merge pull request #37 from jts/master

fix argument sanity check when -s is specified
update documentation for vcfcombine
Merge branch 'master' of github.com:ekg/vcflib
updates

vcfhetcount --- now accept stdin properly

vcfsample2info --- convert per-sample data to records in INFO field

vcfqual2info --- stash QUAL in the INFO field
vcfglbound --- cap GLs and possibly exclude sites with GLs > 0

This normalization process is important when providing GLs as input to phasing
and imputation systems.

Normalization involves scaling all GLs by the max for the sample, so that the
max GL is represented as 0, maintaining the relative values of each GL.  Then,
GLs which are still below a given threshold are set to the threshold to prevent
underflow.  A suitable threshold for typical use is -10, but no defaults are
set in this application.
Merge pull request #1 from ekg/master

merge