* src/faillog.c: Added support for the specification of a range of

	* src/faillog.c: Added support for the specification of a range of
	users with -u.
	* src/faillog.c: Do not call print_one() for users which do not
	exist.
	* src/faillog.c: Make sure the user's entry is not outside the
	faillog file and initialize the faillog structure in that case.
	* src/faillog.c: Move print_one() closer to print().
	* src/faillog.c: reset(), setmax(), set_locktime() can also change
	entries of user which do not exist.
	* src/faillog.c: reset(), setmax() and set_locktime() shall not
	create entries for users which have no entries if the value has to
	be set to 0.
	* src/faillog.c: reset(), setmax() and set_locktime(): better
	handling of users whose entry is outside the faillog file.
	* src/faillog.c: Improved option handling. Options can now be
	specified in any order.
	* src/faillog.c: Improved warnings when options are not
	compatible or when the faillog cannot be open with the right mode.
	* src/faillog.c: Only fstat the faillog file once.
	* man/faillog.8.xml: Improved documentation.