From Sebastian Messerschmidt, "I've applied a simple fix for the backward animation support in osg::Sequence.
It will simply use the sign of the speed set in the getNextValue. Attached file is against trunk."


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14302 16af8721-9629-0410-8352-f15c8da7e697