[tracker] (23 commits) ...Merge branch 'experiment-with-roi'

[Martyn James Russell <mr src gnome org>]

Summary of changes:

  35c7f7b... libtracker-extract: Unit test to read regions in the XMP me (*)
  362a5fe... libtracker-extract: Very first implementation of the Region (*)
  bd7e812... NFO: Regions of interest in images (*)
  117f27b... NFO: Add cardinality restrictions to the properties (*)
  6029df3... libtracker-extract: test for XMP with custom namespaces pre (*)
  91a39dc... libtracker-extract: handle correctly XMP namespaces (*)
  5e8940e... libtracker-extract: new function to generate sparql of the  (*)
  f08a76a... tracker-extract: JPEG: generate sparql for the regions of i (*)
  69a0bfe... functional-tests: extraction test, support <uuid> urls (*)
  c78cf60... functional-tests: PNG with regions of interest for the extr (*)
  0b42a67... tracker-extrcat: GIF: build Sparql for regions of interest  (*)
  eff3638... tracker-extract: PDF: build sparql for regions of interest  (*)
  5f5d78f... tracker-extract: TIFF: build sparql for regions of interest (*)
  9de36cf... functional-tests: JPG with regions of interest to test extr (*)
  da28802... libtracker-extract: Fix coding style issues (*)
  22b03b4... libtracker-extract: Don't assume ':' exists in every path w (*)
  1602078... libtracker-extract: Use GSlice and free TrackerXmpRegion st (*)
  8693562... libtracker-extract: Fixed memory leak in iterate_simple() f (*)
  fd290d1... tracker-extract: Fix a number of memory leaks (*)
  51d607c... libtracker-extract: Return TRUE in tracker_xmp_apply_region (*)
  3acc9ea... libtracker-extract: Support graph in tracker_xmp_apply_regi (*)
  bb4af51... libtracker-extract: Remove where and uri args from tracker_ (*)
  7032f08... Merge branch 'experiment-with-roi'

(*) This commit already existed in another branch; no separate mail sent