implemented ghost-association of secondary vertices to jets
added explicit jet-track association for candidate-based IPTagInfos
added support for SV clustering, jet flavor for subjets, and explicit jet-track association
removed commented out code and switched from deltaR to deltaR2
implemented fix for possible vector out of range exceptions
added protection for possible division by zero
leftover hardcoded parameter made configurable
templated jet matching function to minimize code duplication
migrated abs/fabs to std::abs
moved maxDeltaR2 calculation outside a double for loop
replaced repeating blocks of code with a function
Merge pull request #6417 from cms-btv-pog/SVClusteringAndExplicitJTA_from-CMSSW_7_3_0_pre2

Secondary vertex clustering + explicit jet-track association