osg: Updated (2.9.10 -> 2.8.4) (see note!)

Note:

The 2.9.x series is the development release and using 2.9.10 in particular
broke the simgear build. OpenSceneGraph 2.8.4 is the latest stable release
and simgear can be build with it.

multimedia/osg/osg.desc

@@ -2,7 +2,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../osg/osg.desc
-[COPY] Copyright (C) 2010 The OpenSDE Project
+[COPY] Copyright (C) 2010 - 2011 The OpenSDE Project
 [COPY]
 [COPY] More information can be found in the files COPYING and README.
 [COPY]
@@ -29,8 +29,8 @@
 
 [L] LGPL
 [S] Stable
-[V] 2.9.10
+[V] 2.8.4
 [P] X -----5---9 211.000
 
-#[D] 3763925026 OpenSceneGraph-2.8.3.zip http://www.openscenegraph.org/downloads/stable_releases/OpenSceneGraph-2.8.3/source/
-[D] 871623594 OpenSceneGraph-2.9.10.zip http://www.openscenegraph.org/downloads/developer_releases/
+[D] 1820490505 OpenSceneGraph-2.8.4.zip http://www.openscenegraph.org/downloads/stable_releases/OpenSceneGraph-2.8.4/source/
+#[D] 871623594 OpenSceneGraph-2.9.10.zip http://www.openscenegraph.org/downloads/developer_releases/