Fix regression due to GlueGen commit c3054a01990e55ab35756ea23ab7d7c05f24dd37, completes JOGL commit 68ca3ae8fcce28c62034299bc6e6f7eaab50bd1f

Add handling of 'initializeImpl()' of generated GLU* classes:
  - GLU      : no 'initializeImpl()' <- no libs
  - GLUgl2es1: no 'initializeImpl()' <- no libs
  - GLUgl:     call 'initializeImpl()' in manual static init impl.

Further more, we shall not initialize the GLU* classes in GLU
static init method, querying GLU* class availability.

Tested via OlympicES1.

1 files changed, 4 insertions, 0 deletions

diff --git a/make/config/jogl/glu-CustomJavaCode-gl2.java b/make/config/jogl/glu-CustomJavaCode-gl2.java
index 4dcb5691e..c8ac9403b 100644
--- a/make/config/jogl/glu-CustomJavaCode-gl2.java
+++ b/make/config/jogl/glu-CustomJavaCode-gl2.java
@@ -7,6 +7,10 @@ static {
         if (val != null && !val.toLowerCase().equals("false")) {
           useJavaMipmapCode = false;
         }
+        // Native code exists
+        if( !initializeImpl() ) {
+            throw new RuntimeException("Initialization failure");
+        }
         return null;
       }
     });