Implement change registration
This will make it possible for plugins to register what they
have changed during installation, so that they can revert
any changes they made during the uninstallation.
https://fedorahosted.org/ipsilon/ticket/67
Signed-off-by: Patrick Uiterwijk <puiterwijk@redhat.com>
Reviewed-by: Rob Crittenden <rcritten@redhat.com>