Make -fscc-profiling a dynamic flag

compiler/cmm/CmmInfo.hs

compiler/cmm/CmmLayoutStack.hs

compiler/cmm/CmmParse.y

compiler/cmm/CmmPipeline.hs

compiler/cmm/SMRep.lhs

compiler/codeGen/CgCallConv.hs

compiler/codeGen/CgCase.lhs

compiler/codeGen/CgClosure.lhs

compiler/codeGen/CgCon.lhs

compiler/codeGen/CgExpr.lhs

compiler/codeGen/CgExtCode.hs

compiler/codeGen/CgForeignCall.hs

compiler/codeGen/CgHeapery.lhs

compiler/codeGen/CgInfoTbls.hs

compiler/codeGen/CgPrimOp.hs

compiler/codeGen/CgProf.hs

compiler/codeGen/CgStackery.lhs

compiler/codeGen/CgTailCall.lhs

compiler/codeGen/CgTicky.hs

compiler/codeGen/ClosureInfo.lhs