Use RDI on Lin64 because ARG4 is RCX.
Use RDI on Lin64 because ARG4 is RCX.

SVN-Revision: 1137

bl4ckic3/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,AmesianX/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,sigma-random/dynamorio,code4bones/dynamorio,code4bones/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,AmesianX/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,AmesianX/dynamorio,sigma-random/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio