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Use -1 to mean wait_channel is empty.
Start process loop with descriptor 0 if keyboard_descriptor is not 0.
(make_process): Initialize descriptors to -1.
(Fdelete_process): -1 means empty, in infd.
(deactivate_process): Likewise.
(process_send_signal): Likewise.
(kill_buffer_processes): Likewise.
(sigchld_handler): Likewise.
(status_notify): Likewise.
(close_process_descs): Likewise.
(create_process): Likewise.
(Fopen_network_stream): Likewise.
(send_process): Likewise.
(Fprocess_send_eof): Likewise.  Use XINT when closing outfd.
(Fset_process_filter): Use XINT to get infd value.
(wait_reading_process_input): Likewise.

(wait_reading_process_input): When bypassing select, clear Available.

(Fopen_network_stream): Use them.

(Fopen_network_stream): Handle TERM.

(Fset_process_filter): Set or clear bit in input_wait_mask when nec.

(wait_reading_process_input, init_keyboard): Use it.
Also call change_input_fd.
(change_keyboard_wait_descriptor): New function.

(wait_reading_process_input): Exit without waiting
if wait_for_cell is already non-nil.

when wait_for_cell, do not check the keyboard.

if unknown process name.

second alternative definition.

swallow_events and do_pending_window_change when appropriate.

in the select, if read_kbd was a cons cell.

	* s/irix4-0.h: Get rid of our fake definitions for setpgrp and
	getpgrp.
	* callproc.c (Fcall_process): Go ahead and use the USG calling
	convention for setpgrp.
	* ymakefile (pre-crt0.o): Add rule for this.  Perhaps it will help
	separate-source-directory compilation.
	* emacs.c (shut_down_emacs): Some USG systems #define
	EMACS_HAVE_TTY_PGRP; call getpgrp as appropriate for such systems.
	* sysdep.c (sys_suspend): Call getpgrp as appropriate for USG and
	non-USG.
	* process.c [IRIX] (create_process): Don't put child in process
	group zero before opening the tty; Irix is like USG in this
	regard.

	call setpgrp with arguments, even if USG is #defined.
	* process.c [IRIX] (create_process): Don't call setpgrp before
	opening the pty.  Call it after doing the TIOCNOTTY ioctl.

Do restore Vdeactivate_mark, so that no one else deactivates it.

	(Fopen_network_stream): Cast the second argument to connect, to
	avoid warnings on any system that provides prototypes for connect.

Save and restore Vdeactivate_mark.

(sys_siglist) [LINUX]: Don't even declare it.

	only have the h_addr field in their struct hostent.

	* s/template.h: Mention that you should #define HAVE_TERMIO or
	HAVE_TERMIOS, but not both, and that HAVE_TERMIOS is preferred.
	* systty.h (EMACS_SET_TTY_PGRP): Don't assign the return value of
	tcsetpgrp to *pgid; it's just a status value.
	* config.h.in (HAVE_RANDOM): This shouldn't be defined on Linux
	systems using XFree386, and perhaps is inappropriate in general.
	* m/intel386.h: #undefine the integer size macros, since the Linux
	<values.h> file #defines them itself.
	* mem-limits.h (get_lim_data): Linux has the ulimit call; if it
	fails, fall back on ULIMIT_BREAK_VALUE.
	* process.c: Linux needs the WAITTYPE, etc. definitions.
	* unexec.c (hdr, ohdr): Linux has the ordinary `struct exec' type;
	no need to use SYSV names.
	* s/linux.h: New file.

	29th, since that re-introduces the race condition the comments are
	warning about.  Call clear_waiting_for_input before calling
	status_notify, though.

	clear_waiting_for_input when we exit the loop because process
	input has arrived.

	inaccessible.

	Solaris, it's not necessary to check if we should redeliver SIGIO,
	according to David Mackenzie.
	* s/sol2.h: #include "usg5-4.h", and #define const.

call before the set_waiting_for_input call.

	equivalent of /dev/null, and the suffixes used by executable
	files.  This is simple, and helps people porting Emacs to other
	operating systems.
	* process.h (NULL_DEVICE): Give this a default value.
	* process.c (Fstart_process): Pass EXEC_SUFFIXES to openp.
	(Fprocess_send_eof): Use NULL_DEVICE instead of "/dev/null".
	* callproc.c (Fcall_process): Pass EXEC_SUFFIXES to openp.
	Use NULL_DEVICE instead of "/dev/null".

	floating-point as well as integer arguments.  subr.el defines the
	former as an alias for the latter.
	* data.c (Fnumber_to_string): Renamed from Fint_to_string.
	(wrong_type_argument): Adjust caller.
	(syms_of_data): Adjust defsubr.
	* fns.c (concat): Adjust caller.
	* lisp.h (Fnumber_to_string): Adjust extern declaration.
	* mocklisp.c (Finsert_string): Adjust caller.
	* process.c (status_message): Adjust caller.

	(WIFSTOPPED, WIFSIGNALED, WIFEXITED, XRETCODE, WSTOPSIG,
	WCOREDUMP, WTERMSIG): New dummy definitions.
	(deactivate_process): Add missing semicolon.