All command can be operated without a --dir directory from within an installation.
Exceptions are install, uninstall, undo, provision, update.
Fixed a general problem when provisioning from a child with --dir=../, installation was not deleted as soon as the current dir was deleted. Need canonical path.
Some cleanup.
Added more tests for default universe. Allow to set builtin universe from tests.
All command can be operated without a --dir directory from within an installation. Exceptions are install, uninstall, undo, provision, update.