hack to remove linking in the same layer
use hash map when finding HGC neighbours instead of tree based map
tuning up clustering based on initial geometry fixes

Conflicts:
	RecoParticleFlow/PFClusterProducer/test/run_display.sh
back-port of configBuilder to handle DQMIO
relval matrix uses DQMIO for workflow injection to production. --revertDqmio=yes available if one needs to use old DQM
DQMIO in upgradeKeys for upgrade-specific HARVESRTING step
back port the last DQMIO features to 620_SLHC
changes for phase1 material budget plots
changes for phase1 material budget plots
changes for phase1 material budget plots
Add an extra check that histogram minimum is less than maximum when merging
Convert some tabs to spaces to preserve formatting style
Merged refs/pull/5663/head from repository cms-sw
temporary fix to a failure when merging histograms
Merge pull request #5627 from lgray/HGC-Linking

HGC Linking Incrementals
Merge pull request #5653 from mrmonge/CMSSW_6_2_X_SLHC

Cmssw 6 2 x slhc
Merge pull request #5683 from deguio/DQMIO_620_SLHC

Dqmio 620 slhc
Merge pull request #5671 from mark-grimes/addMergeCheck

Fix failure during merge when histogram limits are invalid
Merge pull request #264 from cms-sw/CMSSW_6_2_X_SLHC

Cmssw 6 2 x slhc