Allow the platform to specify a press and hold delay.

Press and hold is an interaction available on many platforms,
particularly when touch is involved. In Qt Quick this is exposed to the
user via MouseArea::onPressAndHold. This value should not be hard-coded,
but rather use a platform-specified default. This commit adds the
low-level hooks necessary for that to happen.

Task-number: QTBUG-24793
Change-Id: I621a8ac9de66b881e34336228056bffbb6306a70
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Add Asset Locations to QStandardPaths::DataLocation

The locations of UI assets are deployed to is being added as a read-only
location under DataLocation.

As such a path is located differently on certain mobile platforms, such
as Android and BlackBerry, having an entry in StandardPaths will make it
easier to write cross-platform code.

Change-Id: I4533c90ed7157725a8604591595b350c7f616723
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: David Faure <david.faure@kdab.com>
Remove all "old atomic" code from Qt

The new atomic code was introduced in Qt 5.0. The platforms that did not
get ported were announced as deprecated in Qt 5.2. The code is now
removed in Qt 5.3.

The status for the platform/compiler/OS combinations affected is:
 * Linux with GCC or Clang: still compiles on all platforms
   (via qatomic_cxx11.h or qatomic_gcc.h)
 * INTEGRITY with Green Hills compiler: no longer compiles
 * Solaris on UltraSPARC, with Sun Studio: no longer compiles
 * AIX on POWER5 or 6, with IBM Visual Age: no longer compiles
   (probably did not compile Qt 5.0 either)
 * VxWorks in kernel mode: no longer compiles

[ChangeLog][General] Support for the following platforms has been
removed, due to lack of interest in updating support: INTEGRITY,
VxWorks, Solaris on UltraSPARC (with the Sun Studio compiler suite), AIX
on POWER processors (with IBM Visual Age compiler suite).

Change-Id: I8a961385fd95011c016b2b1eec52034794dae3e1
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Remove the files building AVX code

This feature was never completely implemented. Sure, it's nice to
build the SSE2 + SSSE3 code with the VEX prefix, which results in
better code. But the leap isn't that big anyway.

This is the first step to removing the runtime detection for the
drawhelpers. They create timebombs when we use inline functions.

Task-number: QTBUG-30440
Change-Id: Ic53b2cf5261106a1c940d4a36eb6111b7d998be1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>