Python operators

- simplified C operator API bpy.__ops__ since its wrapped by python now.
- needs the class to have an __idname__ rather then __name__ (like menus, headers)
- convert python names "console.exec" into blender names "CONSOLE_OT_exec" when registering (store the blender name as class.__idname_bl__, users scripters wont notice)
- bpy.props.props ???, removed

source/blender/python/intern/bpy_util.h

@@ -59,6 +59,7 @@ typedef struct BPY_class_attr_check {
 	const char	*name;		/* name of the class attribute */
     char		type;		/* 's' = string, 'f' = function, 'l' = list, (add as needed) */
     int			arg_count;	/* only for function types, -1 for undefined, includes self arg */
+    int 		len;		/* only for string types currently */
 	int			flag;		/* other options */
 } BPY_class_attr_check;