From Stephan Huber, add support for controlling the OSXMenubarBehavior set by DisplaySettings.
From Stephan Huber, "attached you’ll find a small enhancement for present3d. Now you can get advanced help via —help-all etc (similar to osgviewer)"
Fixed build problems with the OSG_USE_REF_PTR_IMPLICIT_OUTPUT_CONVERSION off
Fixed FileInfo self intialization bug
Removed depreated glib call
Fixed warning
Fixed warning
Remoed -fpermissive
Merge branch 'master' of https://github.com/openscenegraph/osg into Dev
Introduce new osgGA::Event and osgGA::EventHandler base classes that the old GUIEventAdapter and GUIEventHandler now subclass from.

The new osgGA::Event is written to support more generic events than the original GUIEventAdapter which are written for keyboard and mouse events.
Merge branch 'master' of https://github.com/openscenegraph/osg into Dev