patch 7.4.1450

Problem:    Json encoding still fails when encoding is not utf-8.
Solution:   Set 'encoding' before :scriptencoding.  Run the json test
            separately to avoid affecting other tests.

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1450,
 /**/
     1449,
 /**/