Log Message:
Updating to 0.9.1 before importing to pkgsrc

Note: In version 0.9 the API changed in two significant ways:
	It changed from a module defining several classes to a package
	containing several modules, each defining a single class.
	Where classes had been named SomethingFileLock before the last two
	words have been reversed, so that class is now SomethingLockFile.