lext_set_log_file (ul_lextools)

	lext_set_log_file(log_file.ch.d, options.u4.v)

	This routine establishes an error log file for use by
	Lextools routines.

	log_file	log file name (LOG_NAMLEN characters)
	options		logging options (not used)

	This function requires the following include files:

	ul_lextools_h:lextuti_h

	Related functions:

	lext_init_active_image, lext_remove_active_image, lext_draw_object_c,
	lext_modify_object_c, lext_erase_object, lext_sa_menu_c,
	lext_enable_device_monitoring, lext_disable_device_monitoring,
	lext_enable_image_control, lext_disable_image_control,
	lext_current_active_image, lximag, lxobj

	C/C++ usage:

	static const char	log_file[LOG_NAMLEN+1] = "LEXSALOG";
	unsigned int	options = 0;

	lext_set_log_file(log_file,options);