* Add ETC1 builtin alpha support. * Rename setETC1AlphaFileEndix to setETC1AlphaFileSuffix * Check whether etc1 alpha suffix is empty * fix Code ident & Add etc1 alpha test case to SpriteTest. * Remove unused ETC1AA shader programs * Fix all review issues and endl issues * Add a new TriangleCommand::init() with Texture2D* instead of GLuint textureID * #fix issues