[tracker/wip/carlosg/test] (6 commits) ...libtracker-data: Refactor code

[Carlos Garnacho <carlosg src gnome org>]

Summary of changes:

  b8785b9... libtracker-data: Do not forward cursor variable names separ (*)
  6220a54... libtracker-data: Add n_columns argument to cursors (*)
  6399c19... libtracker-data: Store the number of columns in select cont (*)
  5a3596b... libtracker-data: Forward number of columns to cursor (*)
  62382dc... libtracker-data: Handle annotating value types in cursors (*)
  88e1d85... libtracker-data: Refactor code (*)

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