Added support for EXT_blend_equation_separate / ATI_blend_equation_separate.
The internal driver interface was also changed to use
BlendEquationSeparate instead of BlendEquation.
diff --git a/src/mesa/drivers/common/driverfuncs.c b/src/mesa/drivers/common/driverfuncs.c
index 3c638be..8da537d 100644
--- a/src/mesa/drivers/common/driverfuncs.c
+++ b/src/mesa/drivers/common/driverfuncs.c
@@ -115,7 +115,7 @@
    /* simple state commands */
    driver->AlphaFunc = NULL;
    driver->BlendColor = NULL;
-   driver->BlendEquation = NULL;
+   driver->BlendEquationSeparate = NULL;
    driver->BlendFuncSeparate = NULL;
    driver->ClearColor = NULL;
    driver->ClearDepth = NULL;