Revert c3f485c5250a503832e767e1fe5e40595126f6c5

It has been discovered it changes the behavior of qdbuscpp2xml
resulting in builds of some apps breaking. Even if the
behavior is more correct, such behavior change in a stable branch is
not acceptable

Change-Id: I1d79104ebf11c3f48c84f109be2926af96cddae7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
[Mac] Fix modifier reporting issue in the key events

This issue was introduced when porting key handling code from Qt4 to Qt5.
To conform to the implementation of QKeyEvent::modifiers() we have to invert
modifier state logic before sending them as QKeyEvents.

Task-number: QTBUG-31332
Change-Id: I3bb41169f8ab2a4b0a13a224bb461d2792d3a65f
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Doc: preliminary review of qdoc-manual.qdoc

- syntax
- grammar
- writing guidelines
- spelling
- added contents for \\note

Task-number: QTBUG-31801
Change-Id: I9df1af270acd7fbad39048a47b883f3002e168e4
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>