Added patch to Geant4

See also https://github.com/cms-sw/cmsdist/issues/310
Geant4 patch is now local.

See also https://github.com/cms-sw/cmsdist/pull/315
fixup
Merge pull request #315 from degano/geant4-patch

Added patch to Geant4 to fix pre11 validation crashes.
Merge remote branch 'origin/IB/CMSSW_7_0_X/stable' into IB/CMSSW_7_0_X/stable