[tracker] Created tag 2.1.6

[Carlos Garnacho <carlosg src gnome org>]

The unsigned tag '2.1.6' was created.

Tagger: Carlos Garnacho <carlosg gnome org>
Date: 1541425612 +0100

    Release 2.1.6

Changes since the last tag '2.1.5':

Carlos Garnacho (9):
      Merge branch 'wip/jtojnar/2.1-dist-fix' into tracker-2.1
      build: override prefix on all system install locations
      build: Do not link libtracker-data.so to libtracker-sparql.so
      build: Fixes to docs generation
      docs: Fix xrefs to glib docs
      build: Use build_by_default to generate ontology docs
      build: Set proper soversion to libraries
      build: Fix dependency tree in libtracker_sparql_dep
      Release 2.1.6

Dušan Kazik (1):
      Update Slovak translation

Jan Tojnar (1):
      build: Include map files in dist tarball

Марко Костић (1):
      Update Serbian translation