libtracker-data: Don't use the count_changes PRAGMA, it is deprecated

See SQLite manual section here:
  http://www.sqlite.org/pragma.html#pragma_count_changes
tracker-extract-gstreamer: Don't leak file descriptors & use up all FDs

The GStreamer extractor was not calling all the shutdown functions internally
to clean up streams in failure conditions.

https://bugzilla.gnome.org/show_bug.cgi?id=704048
https://bugzilla.redhat.com/show_bug.cgi?id=741479
https://bugzilla.redhat.com/show_bug.cgi?id=959020
Updated Traditional Chinese translation(Hong Kong and Taiwan)