Initialize QFileSystemMetaData::size_ data member

There's a code path which reads that member before it got anything
assigned to it, triggering undefined behavior.

The code path goes as follows:

1. an instance is created in QFSFileEngineIterator::advance
2. the instance is passed to QFileSystemIterator::advance, which fills in
   only some members (not size_)
3. the instance is passed to QFileInfoPrivate which does a deep copy,
   reading an uninitialized size_

Change-Id: I6835ee701a83b63ca4bad6235feeb6a23566fcd3
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QMacStyle: save context state before changing to avoid crash

qt_drawFocusRingOnPath was saving the graphics state after setting
a new context. This leads to zombie NSBitmapGraphicsContext access
with QFileDialog.

Task-number: QTBUG-41879
Change-Id: I7fc7d959d2b0f01cb3491d639023083f1b46d175
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
QAbstractItemView: fix CTRL+A select all behavior

The check for Qt::Key_A to handle selectAll was changed to directly
compare to QKeySequence::SelectAll as this will only match Ctrl. The
former implementation also triggered when e.g. Shift was pressed.
Added a check that selectAll is only called when selection is not
disabled, i.e. selectionMode=NoSelection.

Added a unit test for selectAll().

Task-number: QTBUG-26687
Change-Id: I721e7ab590b55d7d754b3b74ef01756fa5aa1315
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
QMacStyle: Fix QPushButton with menu appearance on 10.10

As usual, this includes small and mini control sizes.
Flat and oversized buttons will fall back to the HITheme
rendering for now.

Task-number: QTBUG-40833
Change-Id: I08d67c48b2e72681af4dc4a37ea498f7aac1dca0
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Fix QtBearer connman backend report correctly on lte network

Task-number: QTBUG-41813
Change-Id: I977facc2ee59571d24e60ac9d5d41e957403b344
Reviewed-by: Richard J. Moore <rich@kde.org>