Merge branch '4.7' of scm.dev.nokia.troll.no:qt/doc-staging into 4.7-integration

Merge branch '4.7' of scm.dev.nokia.troll.no:qt/doc-staging into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/doc-staging:
  Doc: Correcting character escape bug
  Doc: Clarified the lifetime of the session bus connection.
  Doc: Added a snippet showing the default BorderImage tiling behavior.
  Doc: using pointer member variables and language change
  Doc: Added more instructions to help with device file permissions.
  Doc: Mentioned default values for the BorderImage tile modes.
  Document the difference between +0.0 and -0.0 for QPointF and QSizeF.