Ideal 2015 geometry scenario
Fix double inversion of MET covariance matrix
replace fabs with std::abs
make no L1 postLS1 customizations beyond new menu if Fast Simulation detected
Add new L1Emulation sequence to all paths with simGctDigis, switch l1extra to sim or unpacked digis based on context
remove legacy simGctDigis from upgrade L1T emulation
fix python crash when no L1 simulation but customs called
remove some commented lines
fix customization when unschedule mode is used
missing block definitions
Provide different error message for DAS lookup issues.

Fix the longstanding bug where a das failure is indicated as an error in
step two. This introduces a new DAS_ERROR exit code which is correctly
associated to step1. This is still not enough to catch the cases in
which is the lookup for pileup which fails, but at least is a good
start.
no cout
initialize func ptrs and also other members, for completeness
Forward port timestamp fix to CMSSW_7_3
fix crashes with gcc491
make David A. happy..  ;)
Merge pull request #6647 from slava77/CMSSW_7_3_0_pre3/fixHCALOOTcrash

 fix occasional crash in PulseShapeFitOOTPileupCorrection for zero processed events in a job (as in #6646 )
Merge pull request #6622 from cms-l1t-offline/l1t-famos-bugfix-730

No L1T postLS1 customs for Fast Simulation
addressing comments by giulio
Merge remote branch 'origin/CMSSW_7_3_X' into CMSSW_7_0_X