Stabilize tst_qclipboard.

If the process terminates while QApplication::processEvents()
runs, the subsequent waitForFinished() returns false and the test
fails.

Task-number: QTBUG-29951
Change-Id: I41f461358920ad430951613dd919885f68ae212c
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Update the documentation for C++11 initializer lists support

The documentation was written for 4.8 when the C++11 standard did not have the
name yet.

Change-Id: I08640a5ae62385b09e181eefafd4cc831e4de456
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
qdoc: Initialize an uninitialized variable

qdoc already ignores QML signal handler comments
and does not report errors for missing QML signal
handler documentation. but the test case for this
bug revealed a separate bug. The test case contains
no import statements, which, technically is legal
but probably won't happen. Still, qdoc failed to
generate output for the test case QML file because
it didn't contain an import statement before the
first qdoc comment. This was caused by an
uninitialized variable, which has now been fixed.

Task-number: QTBUG-30043
Change-Id: Iafa2087b85a6c9e354b2be86c779bbd191181218
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>