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	* sysdep.c [BSD] (inherited_pgroup): New variable.
	(narrow_foreground_group, widen_foreground_group): New functions.
	(init_sys_modes): Call narrow_foreground_group.
	(reset_sys_modes): Call widen_foreground_group.
	* emacs.c [BSD] (inherited_pgroup): Add extern declaration.
	[BSD] (main): Set inherited_pgroup, and put ourselves in our own
	pgroup.