[kupfer] (10 commits) ...Merge branch 'maint'

[Ulrik Sverdrup <usverdrup src gnome org>]

Summary of changes:

  6204c0e... kupfer_provider: Change the D-Bus signal to be more general (*)
  86edee0... nautilusselection: Adapt for kupfer_provider API change. (*)
  1642012... py26: Use explicit // for integer division in ui.browser (*)
  6d42b09... py26: Use explicit // for integer division in core (*)
  f6ea373... py26: Fix to use absolute imports in chromium plugin (*)
  c801e37... py26: plugin.rhythmbox_support: default track number 0 (*)
  f35bb43... Update Portuguese translation (*)
  dc10f7c... Documentation: Update the man page with new text from websi (*)
  3f0eb36... grouping: Check that values exist before merging groups (*)
  ac2d243... Merge branch 'maint'

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