Add a typecheck pass (mostly a stub right now).
Add a typecheck pass (mostly a stub right now).

JohanEngelen/SDC,sidmutha/SDC,JohanEngelen/SDC,UplinkCoder/SDC,DmitryOlshansky/SDC,schancel/SDC,UplinkCoder/SDC,sidmutha/SDC,DmitryOlshansky/SDC,deadalnix/SDC,SDC-Developers/SDC,bpr/SDC,deadalnix/SDC,deadalnix/SDC,DmitryOlshansky/SDC,schancel/SDC,UplinkCoder/SDC,sidmutha/SDC,JohanEngelen/SDC,SDC-Developers/SDC,bpr/SDC,SDC-Developers/SDC,bpr/SDC,schancel/SDC