Enhance ExtensionAvailabilityCache ; Expose extension count in GLContext (and clean up)

- GLContext
  - Expose isFunctionAvailable(), isExtensionAvailable(),
           getPlatformExtensionCount(), getGLExtensionCount()
  - sort methods a bit

ExtensionAvailabilityCache:
  - Favor StringBuilder instead of StringBuffer (faster)
  - Resuse set's
  - Hold dedicated counts of extensions, platform and GL

1 files changed, 2 insertions, 2 deletions

diff --git a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java
index 1503aa73d..279a5b9d7 100644
--- a/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/macosx/cgl/MacOSXCGLContext.java
@@ -322,8 +322,8 @@ public abstract class MacOSXCGLContext extends GLContextImpl
     }
   }
     
-  protected final StringBuffer getPlatformExtensionsStringImpl() {
-    return new StringBuffer();
+  protected final StringBuilder getPlatformExtensionsStringImpl() {
+    return new StringBuilder();
   }
     
   public boolean isExtensionAvailable(String glExtensionName) {