Update Exotica_HSCP_SIM_cfi.py

needed for central production requests EXO-Fall13-00199 ---> EXO-Fall13-00236
Merge pull request #4891 from davidsheffield/patch-1

Update Exotica_HSCP_SIM_cfi.py
full path for muonCustoms; required to be able to inline this customise function
Merge pull request #5032 from franzoni/from-CMSSW_6_2_11_postLS1Customs

post ls1 customs: fix