winrt: DNS lookup: don't have duplicate entries

Change-Id: I60ee29bd692f8e385080d4532a0e3230942a2cd3
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Doc: Various \note fixes in Qt namespace documentation.

-changed \note and \warning to "Note:" and "Warning:"
-\note and \warning split the table.
-other minor \note changes

Task-number: QTBUG-36972
Change-Id: I88042550cd01101e7225cd3b5f4e0115ea102ea9
Reviewed-by: Liang Qi <liang.qi@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>
[bcm97425] Fix parameter issue in platformDestroy hook

Change-Id: Ie137314a3a3d480d10d7fe2a8505ce7d5708faba
Reviewed-by: Julien Brianceau <jbriance@cisco.com>
Reviewed-by: Holger Freyther <holger+qt@freyther.de>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Fix annoying warning from ICC 14 on Windows

It says that defining a macro that does defined() is not portable. The
solution implemented for MSVC 2008 and earlier does work, however, and
is portable to all compilers (the parentheses around the macro are
unnecessary).

Incidentally, this makes d98004cd2f33e8147cff9f3cb203fdef5e6dd00e
actually work: Q_CC_MSVC wasn't defined at that point in the file, so
that change had never taken effect.

warning #3199: "defined" is always false in a macro expansion in Microsoft mode

Task-number: QTBUG-39597
Change-Id: Iaa2895e7f63d97c439090043435a2b8d2f185c3a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Accessibility Windows: Do not assert on invalid indexInParent

We try to but don't always guarantee a valid hierarchy, having
applications crash because of this is not a good idea.
The assert currently triggers when showing message boxes.
Fix for the message box case is in progress but this may happen in other
situations.

Change-Id: I6f82b23c8abfcb7f91ecde0584f0e01bd8216ca1
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
qDebug: fix data race in qt_message_print

The setting of (static) messageHandler to qDefaultMessageHandler if null
was happening in multiple threads simultaneously, so it needs synchronization.

Used an atomic pointer in case qInstallMessageHandler is called from a thread,
but more importantly, initialized the static vars right away.

Improve auto test to ensure that qInstallMessageHandler(0) still sets the
default message handler.

Change-Id: I70335af38c1d28a1cdba1df8a79c6006f227422e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>