parallelized and improved type checking in ColGenericOp; InitIds when constructing TTable from THash; Fixed bugs in Unique/KeepSortedRows and in GroupAux; Added Duplicate elimination in Union
Fixed bug in ColGenericOp; Partial implementation of UpdateFltFromTable
Added a parameter to grouping functions to determine whether to use permanent assigned row ids or physical row ids
Fixed benchmarks Makefile
GetWeightedPageRank with outgoing weights stored in THash
Merge remote-tracking branch 'upstream/master'