VariantEvalWalker now passes a pointer to itself to the Stratefication setVariantEvalWalker (and assoc. get method) so that stratefications can look at VEWalker variables to obtain information necessary for their calculations, like the list of eval samples. This is a better interface, in my opinion, than the current approach of extending the base abstract Stratefication to include an initialize function that has all arguments necessarily for any Strat.
JEXL expressions now provide access to the VariantContext vc object itself, so you can write JEXL's that directly use VariantContext and associated functions from the command line.
ExomePostQC Queue script now creates a byAC eval using the new strat, and no longer produces a byAF file (as this was not exact, and lead to strange punctile behavior when actual AF quantization was out of sync with fix quantization of AF strat.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@6015 348d0f76-0448-11de-a6fe-93d51630548a
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