Handle invalid sample counts gracefully in FBOs

Passing in a sample count of -1 should be treated as 0. This is common
when setting up framebuffer formats from a QSurfaceFormat where the
default, unset value is indicated by a value of -1.

This broke QQuickWidget which was unaware of this limitation of
QOpenGLFramebufferObject and was passing format.samples() as the sample
count without making sure it is 0 or higher.

Task-number: QTBUG-39699
Change-Id: I324b8b006eaa992c15ae932f9df305500fefeb65
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
harfbuzz-ng: Pre-allocate enough space for CoreText buffer

This fixes an assert in OS X 10.10 Yosemite, where the pre-
allocated buffer would be too small to hold 3 successive calls
to ALLOCATE_ARRAY.

Task-number: QTBUG-39504
Change-Id: I5a0ae36170636eb97ab21c5903b96674e2a99547
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Fix crash when reusing HB_Face in another font engine

After 717d39ac083e80, if HB_Face was instantiated by QFontEngineFT A
and then used by QFontEngineFT B, whilst A already destroyed,
a crash occurs in hb_getSFntTable() due to accessing a stale pointer.

Task-number: QTBUG-39278
Change-Id: I3428669a311f49cdda1725b778f45219cbcf470d
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Add changelog for Qt 5.3.1

Replaces https://codereview.qt-project.org/#/c/87562/
Change-Id: Id89c8b67ec47cb1d078c5325aa519daeee3cafa9
Reviewed-by: Peter Hartmann <phartmann@blackberry.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
QDnsLookup: Fix build with uClibc

uClibc doesn't have a nsmap member in __res_state. Since it also doesn't have
res_nquery() which is mandatory for QDnsLookup, we can simply disable the code
to fix the build.

Change-Id: Ia872f535519aca3a2de763548c6dd0e3e0ee20d4
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
Reviewed-by: Mandeep Sandhu <mandeepsandhu.chd@gmail.com>
QDBus: fix data race on isDebugging bool

Change-Id: Id0b8bf8dac570abfc6c8768bd4264650ae0c199b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
add buildsystem/qmake changelog

Change-Id: I7fc7d335acd4f6e98517d240cc1f9bd3d035857f
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
update changelog for QtSql 5.3.1

Change-Id: I06bf38a0c005ad4c13fb4db611847c3408060176
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Merge remote-tracking branch 'origin/stable' into 5.3

Change-Id: I7462840d15583ead82e86fcf5c84659b909e8c4e
Merge remote-tracking branch 'origin/5.3.1' into 5.3

Change-Id: I51fb88701b19ce4f7ea78e12a4049156f3ef9d7f
Mark behavior of QFileInfo::absoluteFilePath as undefined in corner cases

The current description was misleading, since e.g.

QFileInfo().absoluteFilePath()

will always return an empty string.

QFileInfo("").absoluteFilePath()

however will return the current working directory ...

Instead of documenting these small quirks we should rather mark the
exact behavior as undefined, like we already do for absolutePath().

Change-Id: I70358413528429c2c2dee37480ad018aae26e6cb
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
CMake: Allow modules to specify the location of tests.

Webkit has a different layout, so allow the tests to be found in
the appropriate location.

Change-Id: Iedbea6daada98a3c3efdbcfc1fe4df5d2c8cea6a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Fix -Werror compilation on big-endian

qt_alphamapblit_rgba8888 is only used on little-endian systems, where
qAlpha() returns the correct value.

qdrawhelper.cpp:6256:13: error: 'void qt_alphamapblit_rgba8888(QRasterBuffer*, int, int, quint32, const uchar*, int, int, int, const QClipData*)' defined but not used [-Werror=unused-function]

Change-Id: Ibba6dd6914138f7ae5d53a8e354597f5fff65433
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
QColorDialog: Do not update custom/standard color cells while picking.

Delay the updating of the custom/standard color cells to the mouse
release of the color pick. This makes it possible to pre-select
a custom color cell for assignment before the pick and prevents
that from changing when its color is crossed by accident.

Rename the existing method QColorDialogPrivate::setCurrentColor(QRgb)
to setCurrentRgbColor() and move QColor::setCurrentColor() to
QColorDialogPrivate, introducing an enumeration for specifying what to
set.

Task-number: QTBUG-39792
Change-Id: Ibfe96e345589346e8c72976a0335e901798f2766
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Merge "Merge remote-tracking branch 'origin/stable' into 5.3" into refs/staging/5.3
Merge "Merge remote-tracking branch 'origin/5.3.1' into 5.3" into refs/staging/5.3