Changes

Resolve RenameJavaSymbol issues (GLUgl2 and CGL) using GLEmitter (-> DelegateImplementation) due to new GlueGen Semantics

GlueGen would usually use the original native C method name
for proc-address or direct call.

GLEmitter however uses the renamed method name,
assuming it is shorter and resulted from a 'RenameExtensionIntoCore' directive.

GLUgl2 native usage was broken since 2.2.4

GLUgl2 and CGL use RenameJavaSymbol w/ the intention of delegation,
hence resolve the issue using the new DelegateImplementation directive
which preserves the original function name for the native call.