Flag merged clusters for relaxed CPE errors
Add existsAs protection for config parameters
Bypass refineCluster if useLegacyError is true
Find no. of strips without file reader
added option to use the Kt clustering algorithm for jet pruning
added dynamic filtering radius (as in arXiv:0802.2470)
Merge pull request #6349 from wmtford/mergedCPE_730pr2

Flag merged clusters for relaxed CPE errors
Merge pull request #6427 from ferencek/KtPruningAndDynamicFiltering_from-CMSSW_7_3_0_pre2

Kt pruning and dynamic filtering radius
Merge remote branch 'origin/CMSSW_7_3_X' into CMSSW_7_0_X