Migrating from libtracker-control 1.x to 2.0
Tracker 2.0 is a new major version, containing some possibly
incompatible changes. Most of the changes are not hard to adapt,
and even unlikely to be a problem if the ported application was
kept up-to-date in its usage of 1.x.
Cancellation support for tracker_miner_manager_index_file
The tracker_miner_manager_index_file method now requires a GCancellable
argument. You can pass NULL if you don't want to specify one.