QPrintDialog: document the modality on OS X and Windows

You can't programmatically close the dialog because it's modal.

Task-number: QTBUG-32464

(backported from qtbase/bd602a2dc4bc9491f80919b09a8990edb6fbee97)

Change-Id: Ib7573b347b3f10914e60af05f95ed9f5763eadd8
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
QPrintDialog OSX: don't crash if ApplicationModal and no parent

Task-number: QTBUG-32464

(backported from  qtbase/03855decfcb4e05817424843564a4b66636bb347)

Change-Id: I12892798419b2efcf404f972930562d50d045ea3
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
printsupport: set duplex setting correctly to CUPS printer

If CUPS printer default is not DuplexNone then setting duplex
to None for printer did not have any effect on duplex setting.

(backported from qtbase/385e584926f2957d6e9ec4c2c4e89b37a5e0c80c)

Change-Id: Ia72f599a9e5fa511b3214c6b8016e21f40409b86
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
Pass events to QGestureManager from the main (GUI) thread only.

Task-number: QTBUG-20946

Change-Id: I964452c1e97bd3d3a521e33abeb2f7d8cdbc89a9
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
(cherry picked from qtbase/9b28ab3f38e21f2e1498dea5dd761d22d72fb1ac)
Assistant: Set the url on created QNetworkReply objects.

WebKit needs this as a base url in order to resolve links in css for
example. If index.html is at the location doc/, and it loads a css
stylesheet at href="_static/first.css", and first.css contains

 @import url("second.css")

Then second.css should be found in _static, relative to first.css.

That only works if WebKit knows the requested url of the loading
document, so make sure that is set on the reply object.

This is a backport of part of commit qttools/e38ee135f3cf74f413dc7a3e4a9f97a6b5d903bf

Task-number: QTCREATORBUG-8211
Change-Id: Ia92519ab37269a6d3f8bf0e4f8b348595f1f3d59
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Fix link to Tier 2 mingw-builds version

We switched to rev3 in the binary packages to get in a gdb fix.

This change does not apply to Qt 5.

Change-Id: I0328c35671e84e3b592c99cf5ebe8d1cce1ea80f
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Doc: Mention that MINGWM10.DLL only applies to MinGW 4.4

Mingw-builds based 4.8.2 has different files ...

Change-Id: I99659c4f6e46673c6077a890b744e355c5226d36
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Avoid out of bounds memory reads when scaling images

The calculation of the width/height required for the
scaling algorithm was prone to floating point rounding
issues, where the lower value got rounded down, the higher
one rounded up. This could lead to a situation where we
iterated over one more line/pixel in the line than we have
in the source image.

Correct this by passing the dimension of the source image into
the function and bounds checking the values before iterating.

Backport of If44b2235a479224660d508a0504fec40d724763a from Qt 5

Task-number: QTBUG-35927
Change-Id: If145ee715a143b889538243f45227d8d78a0050f
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>