* scripts/controllib.pl (outputclose): Change argument from a boolean

	* scripts/controllib.pl (outputclose): Change argument from a boolean
	to an optional filename argument. Fix all callers.
	(parsecontrolfile): Take '$controlfile' as an explicit argument.
	Fix all callers.
	(parsesubstvars): Take '$varlistfile' as an explicit argument.
	Fix all callers.
	(parsechangelog): Take '$changelogfile' as an explicit argument,
	'$changelogformat' and '$since' as optional arguments. Fix all
	callers.
	(setsourcepackage): Take '$v' as an explicit argument.