Emulator opengl - Opengl ES 1.1 encoder

This change the opengl target side encoder library (libGLESv1_enc)
The library includes api definition files for 'emugen' code generation
tool and a serrounding code to handle opengl specific sematics (such as client state)
tracking

Change-Id: I8708b945c8c9c7fbe06147b703bdee27a576c7a0

tools/emulator/opengl/system/GLESv1_enc/GLEncoderUtils.h

@@ -0,0 +1,22 @@
+/*
+* Copyright (C) 2011 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#ifndef GL_ENCODER_UTILS_H
+#define GL_ENCLODER_UTILS_H
+
+extern "C" {
+    size_t pixelDataSize(void *self, GLsizei width, GLsizei height, GLenum format, GLenum type, int pack);
+};
+#endif