patch 8.1.0317: Cscope test fails when using shadow directory

Problem:    Cscope test fails when using shadow directory.
Solution:   Resolve symlink in Vim. (James McCoy, closes #3364)
diff --git a/src/version.c b/src/version.c
index 0ffd11e..d599381 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    317,
+/**/
     316,
 /**/
     315,