Mention QRect's int min/max constraints in detailed description.

Task-number: QTBUG-25732

Change-Id: If330768c3075568f09593ed17f26389d3dec3335
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
QDnsLookup: test MX and SRV records that can change order

The DNS protocol changes the order of the RRs in each reply it sends,
in an effort to balance the load in servers. For most tests, to ensure
that we get always the same result, we simply sort it back.

For MX and SRV, we can't sort because we also need to test that
QDnsLookup sorted correctly according to priority. So instead allow
that test to have multiple alternatives.

Change-Id: I5c119f907b31789de5c9cf2471cc82ecd140d06f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QDnsLookup: test multiple TXT answers too

The TXT record is particular because each RR can contain multiple text
strings. So we need to join each RR's texts too.

To make it easy, I've made everything be QStrings.

Change-Id: Ia0506544b913585e7be860c81077cff8e0dab547
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Fixes QKeyEvent::count() on Windows

All other main platform plugins leave the count parameter at its
default value (1). For improved compatibility, make the Windows plugin
do the same, instead of hardcoding the value to 0.

Task-number: QTBUG-31285
Change-Id: Id87fd559d13f42391be3200d5ff2393285f0d2a6
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Gatis Paeglis <gatis.paeglis@digia.com>
Use the GCC inline assembly when building for MinGW

MinGW has a longstanding problem of providing the MSVC intrinsics that
every Windows developer expects to be there. Other projects have run
into those problems.

So instead just use the GCC inline assembly.

Change-Id: I5651f97f9a4dfbf98ebbf063f91f221eab80b224
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>