Enable window dragging code in QToolBar on Mac

Allows moving the window by dragging the unified
title and toolbar area.

Task-number: QTBUG-34411
Change-Id: Idd85c0031895b5afd7dfdc8616e4452c47935af2
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Mac: Update PE_IndicatorToolBarHandle drawing.

Smaller, rounder, darker toolbar handles. Works
especially well in unified toolbar mode.

Task-number: QTBUG-34411
Change-Id: I41eafdf0bb1dbbb4ed96d7bd799eb6f53bccbf7d
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Fix Use android theme when defined

It is possible to define the theme to use for android in the AndroidManifest.xml.
If it is defined in the activity qt itself should not overwrite it. The change uses
the defined style in case it is given in the AndroidManifest.xml.
This seems to fix also QTBUG-35151.

Task-number: QTBUG-35050
Change-Id: I8b55c02ca1ecd7baa5f2f9460d154095aacf015f
Reviewed-by: BogDan Vatra <bogdan@kde.org>