Update headers

api/GLES2/gl2ext.h

diff --git a/api/GLES2/gl2ext.h b/api/GLES2/gl2ext.h
index ab1ddb8..4f3bcfb 100644
--- a/api/GLES2/gl2ext.h
+++ b/api/GLES2/gl2ext.h
@@ -38,7 +38,7 @@
 #define GL_APIENTRYP GL_APIENTRY*
 #endif
 
-/* Generated on date 20181031 */
+/* Generated on date 20181109 */
 
 /* Generated C header for:
  * API: gles2
@@ -2542,6 +2542,10 @@
 #endif
 #endif /* GL_NV_clip_space_w_scaling */
 
+#ifndef GL_NV_compute_shader_derivatives
+#define GL_NV_compute_shader_derivatives 1
+#endif /* GL_NV_compute_shader_derivatives */
+
 #ifndef GL_NV_conditional_render
 #define GL_NV_conditional_render 1
 #define GL_QUERY_WAIT_NV                  0x8E13