[tracker] (18 commits) Non-fast-forward update to branch wip/carlosg/update-perf

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/update-perf' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  3d9e7d3... core: Make it possible to look up properties by short URIs
  5a4ef44... core: Avoid expanding property names for lookups
  ff2f47b... core: Shuffle graph URI expansion
  b116a17... core: Delay GHashTable creation
  2d79f52... core: Use TrackerResourceIterator to iterate resources for 
  7bc7792... core: Maintain array for refcount changes
  f2ef1a4... core: Decouple FTS updates from previous property value loo
  2d7f09e... core: Optimize deletion of classes of a resource
  6d955d9... core: Optimize call to fetch property values
  efadba2... core: Use statement cache on queries for property values
  7983419... core: Shuffle query for RDF types of a resource
  fdb0711... core: Keep statement to query resource IDs
  ba188ee... core: Don't ask to cache a one-time statement
  162e0a0... core: Return a boolean on tracker_db_statement_execute()
  c316a7c... core: Avoid finding out resource insertion through GError
  09efe65... core: Drop caching of scarcely run statements
  528cfe1... core: Avoid query for subclasses of a resource
  6508e33... libtracker-sparql: Avoid spurious warnings writing D-Bus en

Commits added to the branch:

  418911e... core: Make it possible to look up properties by short URIs
  9b95732... core: Avoid expanding property names for lookups
  76aeb79... core: Shuffle graph URI expansion
  45f9037... core: Delay GHashTable creation
  2a3628a... core: Use TrackerResourceIterator to iterate resources for 
  d8bbd4d... core: Maintain array for refcount changes
  fa49717... core: Decouple FTS updates from previous property value loo
  06114d4... core: Optimize deletion of classes of a resource
  f792b96... core: Optimize call to fetch property values
  22130bc... core: Use statement cache on queries for property values
  ac1d46c... core: Shuffle query for RDF types of a resource
  2c45f07... core: Keep statement to query resource IDs
  9e6aebb... core: Don't ask to cache a one-time statement
  d7e7e5b... core: Return a boolean on tracker_db_statement_execute()
  b38ed31... core: Avoid finding out resource insertion through GError
  e31c806... core: Drop caching of scarcely run statements
  d3c0a38... core: Avoid query for subclasses of a resource
  6632b35... libtracker-sparql: Avoid spurious warnings writing D-Bus en