qmake vcxproj generator: write PrimaryOutputExtension value

Second attempt. MSVCPROJ_TARGET contains the resolved target name,
including version number and target extension.
We're splitting this value into PrimaryOutput and
PrimaryOutputExtension.
PrimaryOutputExtension is only written if it contains a non-default
value.

Task-number: QTBUG-26782
Change-Id: I4b828dc5dd47322f653585aee1a5767f0cf8bd48
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Revert "Cocoa: Send obscure events on OcclusionStateHidden"

This caused instability in the CI and testing system:
Tests that expected expose and paint events no longer
got them due to window placement/visibility, including:
	tst_QGraphicsProxyWidget::paintEvent
	tst_QMdiArea::tileSubWindows
	tst_QSizeGrip::hideAndShowOnWindowStateChange

This reverts commit f5cf06f4afc48198780e3c3d0d1a52afce425507.

Change-Id: I017fbf24f3ad99cce6602eddafc3a67f8edc494d
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Further limit the sparse file testing on OS X

At 4GiB the CI test system still spends a considerable
amount of time testing this. Tune the size down to
16 MiB.

Change-Id: I417aa6829fcc734e5de4d7d34e503190f6b291e5
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
XCB: Don't trigger less specific shortcuts

Without this patch some keycodes like Ctrl+Shift+= may generate several
similar key sequences like Ctrl++ and + but only more specific keys
should be returned by QXcbKeyboard::possibleKeys.

Task-number: QTBUG-38137
Change-Id: I23f6522eefaa3b83cfa639f76bdc6a19b450c6f9
Reviewed-by: Gatis Paeglis <gatis.paeglis@digia.com>
Cocoa: Delay QMimeData requests for DnD events.

We were delaying the conversion from Qt to OS X types,
but not the data request to the application.

Introduce "Eager" and "Lazy" pasteboard promises:

Eager promises request the application data immediately
and can continue to use the existing commit-promises-
on-app-exit logic. Eager promises are the default
type and will be used for copy/paste.

Lazy promises delay requesting the data from the application
for as long as possible, specifically until when 
promiseKeeper() is called. Lazy promises are used for
drag-and-drop and are not committed on application
exit.

This brings OS X DnD behavior in line with the 
Windows behavior.

[ChangeLog][OS X] Drag-and-drop QMimeData requests are
now delayed until drop time.

Task-number: QTBUG-31301
Change-Id: I8ddbba41593251f4c0c49c29492dce990066e20d
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
Cocoa: Fix icon size calculation for system tray.

The Overall goal is to make it possible to use correctly-
sized pixmaps in a predictable way, while still doing
something reasonable with small and large pixmaps.
(The recommended pixmap height is up to 18 points.)

Enable use of rectangular icons by selecting pixmaps
based on pixmap height.

Draw a low-resolution pixmap on retina displays if
there is no high-resolution pixmap available. Scale
large pixmaps to fit the available menu bar area.

Add a manual-test with various pixmap sizes

Task-number: QTBUG-33441
Change-Id: I1926181fe27cae526bae58022df3240bae9f8ac8
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>