patch 9.0.0928: using Ruby LDFLAGS may cause build problems

Problem:    Using Ruby LDFLAGS may cause build problems.
Solution:   Do not add Ruby LDFLAGS to Vim's LDFLAGS. (Zdenek Dohnal,
            closes #11592)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    928,
 /**/
     927,
 /**/