Bounds of out Range for timeline animations

[DerSchmale]

In Intermediate_MD5Animation, the SkeletonClipNode often triggers the OOB error below. Similarly, this also happens in VertexClipNode line 60.

RangeError: Error #1125: The index 120 is out of range 120.
at away3d.animators.nodes::SkeletonClipNode/updateRootDelta()[C:\Users\DerSchmale\Workspace\flash\Away3D 4.0\away3d-core-fp11\src\away3d\animators\nodes\SkeletonClipNode.as:167]
at away3d.animators.nodes::AnimationNodeBase/get rootDelta()[C:\Users\DerSchmale\Workspace\flash\Away3D 4.0\away3d-core-fp11\src\away3d\animators\nodes\AnimationNodeBase.as:44]
at away3d.animators::SkeletonAnimator/applyRootDelta()[C:\Users\DerSchmale\Workspace\flash\Away3D 4.0\away3d-core-fp11\src\away3d\animators\SkeletonAnimator.as:458]
at away3d.animators::SkeletonAnimator/updateDeltaTime()[C:\Users\DerSchmale\Workspace\flash\Away3D 4.0\away3d-core-fp11\src\away3d\animators\SkeletonAnimator.as:205]
at away3d.animators::AnimatorBase/update()[C:\Users\DerSchmale\Workspace\flash\Away3D 4.0\away3d-core-fp11\src\away3d\animators\AnimatorBase.as:185]
at away3d.animators::AnimatorBase/onEnterFrame()[C:\Users\DerSchmale\Workspace\flash\Away3D 4.0\away3d-core-fp11\src\away3d\animators\AnimatorBase.as:225]

[rob-bateman]

fixed for looping vertex and skeleton animation clips in commit b3337f1