Added a few extra defines for adding constraints. No new constraints added yet.

source/blender/include/butspace.h

@@ -642,6 +642,8 @@ enum {
 	B_CONSTRAINT_ADD_ROTLIMIT,
 	B_CONSTRAINT_ADD_SIZELIMIT,
 	B_CONSTRAINT_ADD_RIGIDBODYJOINT,
+	B_CONSTRAINT_ADD_CHILDOF,
+	B_CONSTRAINT_ADD_PYTHON,
 	B_CONSTRAINT_INF
 };