[tracker] (11 commits) Created branch wip/carlosg/serialize-api

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/serialize-api' was created.

Summary of new commits:

  58dd0b4... libtracker-sparql: Add internal Turtle format TrackerSerial
  009ef82... libtracker-sparql: Add tracker_sparql_connection_serialize_
  08e5437... libtracker-data: Add query to tell whether a query may be s
  331763e... libtracker-sparql: Implement serialize_async/finish in dire
  df04567... libtracker-data: Use SQL value type as a last resort to det
  2c25e94... libtracker-sparql: Fix refcount management of a serializer'
  57bbf47... libtracker-data: Provide graph information at describe quer
  5d97b2c... libtracker-sparql: Support serialization to Trig format
  601c241... libtracker-sparql: Implement serialize_async/finish on DBus
  6f0b05a... libtracker-sparql: Implement serialize_async/finish on remo
  198f227... cli: Use serialize() method for "tracker3 export" command