* src/pwck.c: Use a %lu format and cast group and user IDs to

	* src/pwck.c: Use a %lu format and cast group and user IDs to
	unsigned long integers.
	* src/pwck.c: Cast number of days to a long integer.
	* src/pwck.c: Use the SCALE macro instead of (24L * 3600L)
	for the values to be set in /etc/shadow.
	* src/pwck.c: Use SHADOW_SP_FLAG_UNSET for the initial
	value of spent.sp_flag.