patch 7.4.1630

Problem:    Unicode table for double width is outdated.
Solution:   Update to the latest Unicode standard.

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1630,
 /**/
     1629,
 /**/