frig_verify_default_c (ul_friglib)

	status.i4.v = frig_verify_default_c( [,file_index.i4.r]
	This routine verifies if the passed file name exists (has valid
	defaults file(s)).  Optionally, the file_index is also returned.
	file_name	name of file whose existence is being verified
	[file_index]	returned file index (index into file tables)
			(default is NULL)
	[file_type]	type of houses to choose from
			(FRIG_ALL_HOUSES -> all houses (default),
			 FRIG_FRIG_HOUSES -> normal refrigerator houses only,
			 FRIG_COMP_HOUSES -> compressor houses only)

	This function returns status values as follows:

	TRUE			default files with this name currently exist
	FALSE			default files with this name currently
				do not exist
	CBS_MEMFAIL		memory allocation error building menu tables
	CBS_NO_SUCH		no houses have default files

	This function requires the following include files:

	cnsparam_h, ul_friglib_h:friguti_h, acnet_errors_h

	Related functions:

	frig_default_menu_c, frig_next_default_c, frig_verify_user_file_c,

	C usage:

	static const char	file_name[] = "file";
	int	status;
	int	file_index;
	int	file_type = FRIG_ALL_HOUSES;

	status = frig_verify_default_c(file_name,&file_index,file_type);