CMSSW_5_3_14_patch1

Changes since CMSSW_5_3_14:

1. 1833 from @vciulli: fix permission of run_gridpack created: 2013-12-16 18:09:27 merged: 2013-12-16 18:20:48

2. 1710 from @vadler: 53X update PhysicsTools/SelectorUtils created: 2013-12-06 18:58:03 merged: 2013-12-14 09:33:45

3. 1437 from @inugent: External decay to plugins53 xv5 created: 2013-11-12 21:43:33 merged: 2013-12-14 09:32:02