GL_EXT_texture_object
http://www.opengl.org/registry/specs/EXT/texture_object.txt
	GL_TEXTURE_PRIORITY_EXT 0x8066
	GL_TEXTURE_RESIDENT_EXT 0x8067
	GL_TEXTURE_1D_BINDING_EXT 0x8068
	GL_TEXTURE_2D_BINDING_EXT 0x8069
	GL_TEXTURE_3D_BINDING_EXT 0x806A
	GLboolean glAreTexturesResidentEXT (GLsizei n, const GLuint* textures, GLboolean* residences)
	void glBindTextureEXT (GLenum target, GLuint texture)
	void glDeleteTexturesEXT (GLsizei n, const GLuint* textures)
	void glGenTexturesEXT (GLsizei n, GLuint* textures)
	GLboolean glIsTextureEXT (GLuint texture)
	void glPrioritizeTexturesEXT (GLsizei n, const GLuint* textures, const GLclampf* priorities)
