Respect the QTextBlock's character formats in itemization

This fixes regression introduced in f864bdaf592412
(in resolveAdditionalFormats(), formatIndex(si) returned an invalid
block format index due to non-empty specialData->resolvedFormats)

Task-number: QTBUG-36759

Change-Id: I4da13d2edaf1987bcd85b2ef326e9d22345eb8f3
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Fix glyph cache type logic after 97c187da3c1381bc55dd16976

The setting of the default format of Raster_A8 was mistakenly
moved down to below the override of Raster_RGBMask.

Change-Id: I52ee19180471c6f5c8d6824ee35f8d39632c9d94
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Allow QPlatformSystemTrayIcon to create the QPlatformMenu

In case the QPlatformTheme does not provide a QPlatformMenu the
QPlatformSystemTrayIcon is not able to forward the menu because the
QPlatformMenu pointer passed to updateMenu is always null. Providing a
QPlatformMenu in the QPlatformTheme implementation should not be a
requirement for having the menu in the system tray icon. There are
cases where no QPlatformMenu should be created by the theme, e.g. if
the X11 implementation of QSystemTrayIcon gets provided by the xcb
plugin.

The change adds a virtual method to QPlatformSystemTrayIcon to create
a QPlatformMenu. This method is called from the QPA implementation of
QSystemTrayIcon if the QMenu's platformMenu is not present. Thus the
system tray icon is able to provide a custom implementation of the
menu. This gets installed through a new internal method in QMenu to set
the platform menu. It creates the required connections and sync the
state to the QMenu to the newly created QPlatformMenu.

Last but not least QPlatformMenu is extended by a method to create a
QPlatformMenuItem. The default implementation delegates to the platform
theme. This allows to provide the menu item implementation for the
system tray icon without providing the QPlatformMenuItem through the
platform theme.

Change-Id: I17234bd8bcf8c05f8bd786feff0cf8f860430e82
Reviewed-by: Kevin Krammer <kevin.krammer@kdab.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Optimize generic bilinear interpolation using SSE2

The drawing code currently only optimizes the bilinear interpolation
under specific conditions that allows the optimizations used there.

The patch adds a SSE2 version of the fallback 4 pixel interpolation.

Change-Id: I4e8a2ba6cb44647105a9b24e38b3ab755a435050
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>