osg: fixed to not run the supplied configure script (see note!)

Note:

OpenSceneGraph is using cmake for building but they provide one-liner
configure script which is calling 'cmake -DCMAKE_BUILD_TYPE=Release'.
We do not want to run this configure script because our automatically
generated cmake options will be ommited, thus we are relying on our
integrated automatic cmake handling.

multimedia/osg/osg.conf

@@ -0,0 +1,23 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../osg/osg.conf
+# Copyright (C) 2011 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License. A copy of the
+# GNU General Public License can be found in the file COPYING.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+# OpenSceneGraph is using cmake for building but they provide one-liner
+# configure script which is calling 'cmake -DCMAKE_BUILD_TYPE=Release'.
+# We do not want to run this configure script because our automatically
+# generated cmake options will be ommited, thus we are relying on our
+# integrated automatic cmake handling.
+runconf=0
+
+# recommended cmake options
+var_append cmakeopt ' ' "-DCMAKE_BUILD_TYPE=Release"