stencil: fixed stencilunuse missing instruction

kivy/graphics/__init__.py

@@ -82,7 +82,7 @@ from kivy.graphics.context_instructions import BindTexture, Color, \
 from kivy.graphics.vertex_instructions import Bezier, BorderImage, Ellipse, \
     GraphicException, Line, Mesh, Point, Quad, Rectangle, Triangle
 from kivy.graphics.stencil_instructions import StencilPop, StencilPush, \
-    StencilUse
+    StencilUse, StencilUnuse
 from kivy.graphics.fbo import Fbo
 
 # very hacky way to avoid pyflakes warning...
@@ -94,7 +94,7 @@ __all__ = (Bezier.__name__, BindTexture.__name__, BorderImage.__name__,
     Mesh.__name__, Point.__name__, PopMatrix.__name__, PushMatrix.__name__,
     Quad.__name__, Rectangle.__name__, RenderContext.__name__,
     Rotate.__name__, Scale.__name__, StencilPop.__name__,
-    StencilPush.__name__, StencilUse.__name__, Translate.__name__,
-    Triangle.__name__, VertexInstruction.__name__,
+    StencilPush.__name__, StencilUse.__name__, StencilUnuse.__name__,
+    Translate.__name__, Triangle.__name__, VertexInstruction.__name__,
     gl_init_resources.__name__)
 

kivy/graphics/stencil_instructions.pyx

@@ -89,7 +89,7 @@ Here is an example, in kv style::
 
 '''
 
-__all__ = ('StencilPush', 'StencilPop', 'StencilUse')
+__all__ = ('StencilPush', 'StencilPop', 'StencilUse', 'StencilUnuse')
 
 include "config.pxi"
 include "opcodes.pxi"