Properly update empty process history ID
Fix ResidualDecay port from 62X
Remove double counting of ovflw bin in Validation/MuonIsolation
Update TTbar_GenLepAnalyzer.cc
Added interface to ask which modules a module is dependent upon

Using the information from the ‘consumes’ calls, we provide the method
modulesDependentUpon to help determine module to module data
dependencies. This is used by Schedule to determine if there are any
problems given the module dependencies and the order in which modules
are specified in all Paths.
Added Schedule::checkForCorrectness to find cases of ‘unrunnable’ configurations

Using data dependencies between modules and the order in which modules must run
because of Path declarations, the algorithm determines if the configuration is
unrunnable (a module would never get the data it wants because the Path order is wrong)
or indeterminate if run in the threaded framework. The indeterminate nature could be because
one Path has modules in the proper data dependency order while a second Path has them
in the wrong order. Depending on which Path runs first you could get a different answer.
Merge pull request #2568 from mkirsano/fix_residualdecay70

 GeneratorInterface/Pythia8Interface -- Fix ResidualDecay port from 62X
Merge pull request #2542 from wmtan/FixExceptionToActionTableLifetime

Fix exception to action table lifetime
Merge pull request #2519 from wmtan/DoNotMapEmptyProcessHistoryID70X

 FWCore/Sources -- Don't try to update empty process history ID
Merge pull request #2604 from inugent/TopVallabelPatch_7_0_X

Validation/EventGenerator -- Update TTbar_GenLepAnalyzer.cc
Merge remote branch 'origin/CMSSW_7_0_X' into CMSSW_7_0_X
Merge pull request #2635 from Dr15Jones/checkForCircularModuleDependencies

FWCore/Framework -- Check for unrunnable schedules
Merge pull request #2579 from perrotta/adjustValidationMuonIsolation

Validation/MuonIsolation -- Remove double counting of ovflw bin in Validation/MuonIsolation