Lfun:	set_wimpy - make a monster wimpy

Synopsis:
	void set_wimpy(status wimp)

Description:
	The set_wimpy call makes a monster wimpy, which means it runs away
	when its hit points get low, calling run_away.

Return value:
	none

Examples:
	monster->set_wimpy(1);

Note:
	There was no possibility to cancel the wimpy mode in a monster via
	set_wimpy(0)! This document told lies for a long time stating that
	via set_wimpy(0) the wimpy mode is turned off! :-(
	This IS changed!!!

	This could also be achieved via set_brave(1) but then the monster
	could not be scared away.

	The misspelled set_whimpy exists for compatibly! And it will keep
	the old behaviour of ignoring the argument!

See also: living/query_wimpy, living/run_away, monster/set_brave, monster/query_brave, helpdir/wimpy, monster/set_aggressive, monster/query_aggressive