[tracker] (13 commits) ...Merge branch 'wip/carlosg/sparql-corners' into 'master'

[Sam Thursfield <sthursfield src gnome org>]

Summary of changes:

  986b5fe... libtracker-data: Check BIND variable in the current context (*)
  79cfcfd... tests: Add tests for BIND reusing variable names (*)
  86b0b72... libtracker-data: Handle unbound variables in GraphGraphPatt (*)
  0127a31... tests: Add tests for unbound GRAPH variables (*)
  4b60f6b... libtracker-data: Store generation number on TrackerSparql c (*)
  8e7a3c9... libtracker-sparql: Handle correctly OFFSET without LIMIT (*)
  fd38d9a... tests: Add tests for LIMIT/OFFSET modifiers (*)
  d8035fe... libtracker-data: Special case empty remote queries on servi (*)
  9e023e3... libtracker-data: Detect remote queries with no projected pa (*)
  3f24096... tests: Add tests for SERVICE queries with empty/pointless p (*)
  b4cdb29... libtracker-data: Handle nesting of multivalued property fun (*)
  f2d2511... tests: Add test for nested multivalued properties as proper (*)
  86a4d08... Merge branch 'wip/carlosg/sparql-corners' into 'master'

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