- specify files via SRCS vice OBJS. This eliminates an extraneous
".o" in the final OBJS value.
- don't attempt to attach a rez fork (leave it for the upper
level makefile)
- changed OPSHIFT macro to use a (unsigned long) vs (unsigned) cast;
this at least will compile now; ORCA/C was complaining about 'duplicate
label in case statement'.