Re-add deprecated symbol for ABI compatibility with Qt 5.1.

When b0b786a2f05e9451a65519ab8904f55c35f51b7d deprecated
QFontDatabase::supportsThreadedFontRendering() it made the
function inline also. That way compilers like gcc did not
export the symbol anymore.

Change-Id: If9c343eaa2ff90540decbc19b0af33d439c0bbaa
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Export the block's line-height settings to html

Task-number: QTBUG-28404

Change-Id: I87e03ecd981c302a5aefdadf7bcfd9729e37bd13
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Doc: Fix typos and add missing words.

Change-Id: I40e4780bcabbca29425945a69d8a0781cd5c0e9f
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Fix compilation with older MinGW headers

Headers from mingw.org (4.7.2) declares _flushall only if __STRICT_ANSI__
is not defined ... Anyhow, we can as well use fflush(), which is in the
official standard.

Change-Id: Ic2b4d2ac724280f1304221be1fceab067af0c1f8
Reviewed-by: Samuel Gaist <samuel.gaist@edeltech.ch>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Documentation: Add '\since' to doc for Qt::Edge

That enum got introduced in b6e9a8f21ac8b4cc3cc56232ce346ebd7ba17a70

Change-Id: I2d69179624cecff63549bfee66bc68bb4b27af8c
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Network: Fix compiler warning about unused variable

Fix gcc 4.8 warning about unused variable in release mode.

Change-Id: Ie8ef4f99b4fbb9dbb47114fc37774373880fa21b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Fix memory leak in QFileInfo::exists()

Use the the legacy file engine object created in static function
QFileInfo::exists() as the engine of the QFileInfo object to prevent
memory leak. This can also boost a little performance.

Change-Id: I06317d158d487be5ef15fe3244a917a371563ac9
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Don't rely on the Qt version when reading a QHeaderView state stream

Since the datastream version is not set in previous versions of Qt when
streaming the state of the QHeaderView then we cannot rely on this when
adding new data to the state. Therefore we check if we read past the
end before assigning to the new variable.

Change-Id: I7128ffc91e47f9c8797cfa24d206a789d2814908
Reviewed-by: Thorbjørn Lund Martsum <tmartsum@gmail.com>