JoglPipeline: add a quick hack to avoid a JOGL bug

Thanks to Philip Jordan; see discussion at:
http://forum.jogamp.org/Java-3D-crash-or-flickering-tp4035074p4036787.html

This temporary workaround may avoid certain problems in the 3D_Viewer:
* fiji/3D_Viewer#17
* fiji/3D_Viewer#18

src/org/scijava/java3d/JoglPipeline.java

@@ -129,7 +129,10 @@ void initialize(Pipeline.Type pipelineType) {
         // Java3D maintains strict control over which threads perform OpenGL work
         Threading.disableSingleThreading();
 
-        profile = GLProfile.getMaxFixedFunc(true);
+        // HACK: See:
+        // http://forum.jogamp.org/Java-3D-crash-or-flickering-tp4035074p4036787.html
+        profile = GLProfile.getGL2ES1();
+        //profile = GLProfile.getMaxFixedFunc(true);
         // TODO: finish this with any other needed initialization
     }