List supported file formats in search indexing.

The supported file formats is implemented in
QHelpSearchIndexWriter::indexableFiles() function.

Task-number: QTBUG-30110
Change-Id: I3a0885f4c85ec7e14c5f0d4edbb33a463f657b54
(cherry picked from commit qttools/24f92f79e5d1198e79f4d46489af35999e8e74cf)
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Updated WebKit to 5fc7dcbe084a8ee8beda11b92dc2111be1285434

This brings in a fix for QTBUG-30081 as well as a backport of
https://bugs.webkit.org/show_bug.cgi?id=103529

Change-Id: Ibcebe76d6999dc304d4c0323bbfa44be93909285
Reviewed-by: Jonathan Liu <net147@gmail.com>
Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>
Workaround a bug in mktime on QNX

Under certain circumstances, mktime failes to convert the tm struct into secs since epoch.
This is a workaround and fixes the qdatetime and qqmllocale autotests.

Backport of: 56820382f26

Change-Id: I7d819aad2d6901cd096b441f2c18fd97108d9abb
Reviewed-by: Mehdi Fekari <mfekari@rim.com>
Reviewed-by: Wolfgang Bremer <wbremer@blackberry.com>
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Fixed QTreeWidgetIterator to work with sorted QTreeWidget

We cannot access children directly, since that won't ensure that
the pending sort is executed. However, the functions we need are
there already and actually makes the code nicer.

Task-number: QTBUG-29903

Change-Id: I6899284275dd79b991896a5f08486b58d95f819d
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
(cherry picked from qtbase/aa2d10750ad8cdb6a86d519063664c2924b2a635)
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>
Update Irish locale to return correct date format

Change-Id: I89ad9b97dba6f76d34a23ec03b119fb51e592917
Reviewed-by: Lars Knoll <lars.knoll@digia.com>