Teach rpcgen to generate .h files properly when the input filename contains characters that can't be used in preprocessor macros.
Teach rpcgen to generate .h files properly when the input filename contains
characters that can't be used in preprocessor macros.

PR:		bin/66156
Submitted by:	K S Braunsdorf <rpc@ksb.npcguild.org>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase