[cvs-nhc98] Add an FFI version of cHPutChar (for tracing).

malcolm: Thu Mar 29 22:57:03 CEST 2001 Update of /usr/src/master/nhc/src/tracer/runtime In directory hinken:/tmp/cvs-serv18786 Modified Files: io.c Log Message: Add an FFI version of cHPutChar (for tracing).