patch 7.4.1577

Problem:    Cannot pass "dict.Myfunc" around as a partial.
Solution:   Create a partial when expected.

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1577,
 /**/
     1576,
 /**/