temporary string freeze break in Tracker

[Carlos Garnacho <carlosg gnome org>]

Hey all,

As a tracker maintainer, apologies for the string freeze break mishap
in tracker master [1], I'm branching tracker-1.4 from right before
these changes, so there's no need to rush anything.

  Carlos

[1]https://git.gnome.org/browse/tracker/commit/?id=2e1621d547d642cc6347e8f2a33c96bbe8bfd339