b0310da46a
Added VMS changes from Roland Roberts. * process.c (read_process_output): Save, widen, insert the process output, and then restore the restriction if inserting text outside the visible region. * process.c (Fstart_process): Establish an unwind-protect to remove PROC from the process list if an error occurs while starting it. (start_process_unwind): New function to help with that. (create_process): There's no need to explicitly call remove_process if the fork fails; the record_unwind_protect in Fstart_process will take care of it. * process.c (wait_reading_process_input): Test the C preprocessor symbol "ultrix", not "__ultrix__" to see if we should ignore ENOMEM errors from select. * process.c (process_send_signal): On systems which have both the TIOCGETC and TCGETA ioctls, just use the former. * s/bsd4-2.h, s/bsd4-3.h: #define SIGNALS_VIA_CHARACTERS. * process.c (process_send_signal): Put all the code for sending signals via characters in a #ifdef SIGNALS_VIA_CHARACTERS. Decide whether to use the Berkeley-style or SYSV-style ioctls by seeing which ioctl commands are #defined. * process.c (process_send_signal): Doc fix.