Fix compilation of Qt Script with MSVC 2013.

Starting with MSVC 2013, more functions are provided.

Change-Id: Iabbc9a94e7ed01584baaa1bb17c06e41ac70830f
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Fix JavaScriptCore ftbfs on mips64(el)

Task-number: QTBUG-33187
Change-Id: Iaebca6f5095e16c0316549c8a548cfc0a447faf3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
use private linkage where possible

Change-Id: I3c0a1ae83615120f9a0cf8202d4facf915decde2
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Doc: Updated url variable in qdocconf files.

In 5.2, the HTML output is in a flatter structure and when they are
hosted in qt-project.org/doc, the documentation will be found at
http://qt-project.org/doc/qt-$QT_VER

The url variable is used by projects outside of Qt 5 which need
to link to Qt 5 documentation, such as Qt Creator.

Task-number: QTBUG-34584
Change-Id: I77ed98ade58cdd4c6f5c365682993f1be3f3e958
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I1f7bde2c0f17d6cdb2914ef2b3aff271ad584321