fixes for patch release: follow symlinks under src tree too to find the classes.h files; search for all .edmplugincache files in LD_LIBRARY_PATH; fix lostDefs for l1t::CaloTower
Merge pull request #4031 from smuzaffar/CMSSW_5_3_X

fixed duplicateReflexLibrarySearch for patch releases
If no .edmplugincache file found under LD_LIBRARY_PATH then force to use one under CMSSW_BASE to avoid cat hanging
Merge pull request #4038 from smuzaffar/CMSSW_5_3_X

If no .edmplugincache file found under LD_LIBRARY_PATH then force to use one under CMSSW_BASE to avoid cat hanging