patch 9.0.0258: MS-Windows installer skips syntax/shared

Problem:    MS-Windows installer skips syntax/shared.
Solution:   Use "File /r" in the installer script. (Ken Takata, closes #10972)
diff --git a/src/version.c b/src/version.c
index c46894d..474cbcb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -732,6 +732,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    258,
+/**/
     257,
 /**/
     256,