Import OpenGL ES 3.0 headers from Khronos SVN

Add MODULE_LICENSE_MIT: The GLES headers use an MIT license or a
slight variant of it (the "SGI Free Software License B version 2.0",
http://oss.sgi.com/projects/FreeB/).

Change-Id: Ic8f946341cdd0d579f51b6f7a3ee109cd31b1691

opengl/include/GLES2/gl2.h

@@ -1,7 +1,7 @@
 #ifndef __gl2_h_
 #define __gl2_h_
 
-/* $Revision: 10602 $ on $Date:: 2010-03-04 22:35:34 -0800 #$ */
+/* $Revision: 20555 $ on $Date:: 2013-02-12 14:32:47 -0800 #$ */
 
 #include <GLES2/gl2platform.h>
 
@@ -431,7 +431,6 @@ typedef khronos_ssize_t  GLsizeiptr;
 #define GL_RGB5_A1                        0x8057
 #define GL_RGB565                         0x8D62
 #define GL_DEPTH_COMPONENT16              0x81A5
-#define GL_STENCIL_INDEX                  0x1901
 #define GL_STENCIL_INDEX8                 0x8D48
 
 #define GL_RENDERBUFFER_WIDTH             0x8D42

opengl/include/GLES3/gl3ext.h

@@ -0,0 +1,24 @@
+#ifndef __gl3ext_h_
+#define __gl3ext_h_
+
+/* $Revision: 17809 $ on $Date:: 2012-05-14 08:03:36 -0700 #$ */
+
+/*
+ * This document is licensed under the SGI Free Software B License Version
+ * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
+ */
+
+/* OpenGL ES 3 Extensions
+ *
+ * After an OES extension's interactions with OpenGl ES 3.0 have been documented,
+ * its tokens and function definitions should be added to this file in a manner
+ * that does not conflict with gl2ext.h or gl3.h.
+ *
+ * Tokens and function definitions for extensions that have become standard
+ * features in OpenGL ES 3.0 will not be added to this file.
+ *
+ * Applications using OpenGL-ES-2-only extensions should include gl2ext.h
+ */
+
+#endif /* __gl3ext_h_ */
+

opengl/include/GLES3/gl3platform.h

@@ -0,0 +1,30 @@
+#ifndef __gl3platform_h_
+#define __gl3platform_h_
+
+/* $Revision: 18437 $ on $Date:: 2012-07-08 23:31:39 -0700 #$ */
+
+/*
+ * This document is licensed under the SGI Free Software B License Version
+ * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
+ */
+
+/* Platform-specific types and definitions for OpenGL ES 3.X  gl3.h
+ *
+ * Adopters may modify khrplatform.h and this file to suit their platform.
+ * You are encouraged to submit all modifications to the Khronos group so that
+ * they can be included in future versions of this file.  Please submit changes
+ * by sending them to the public Khronos Bugzilla (http://khronos.org/bugzilla)
+ * by filing a bug against product "OpenGL-ES" component "Registry".
+ */
+
+#include <KHR/khrplatform.h>
+
+#ifndef GL_APICALL
+#define GL_APICALL  KHRONOS_APICALL
+#endif
+
+#ifndef GL_APIENTRY
+#define GL_APIENTRY KHRONOS_APIENTRY
+#endif
+
+#endif /* __gl3platform_h_ */