Code cleanup and improvement

Remove one load of position from ctStoreMemOp
Remove the unused parameters from the same
Add support for flagging the store mem op and basic block routines as force
inline.  These steps were required so that LLVM 3.4 would inline the common
instrumentation.
Update to wrapper compiler for using CONTECH_LLVM_HOME to find tools

Change the wrapper compiler to use CONTECH_LLVM_HOME to find the copies of
clang and opt to use with the Contech pass.  Also required if LLVM is not
installed on the user's path.