patch 9.0.0137: debugger test may fail when $CWD is very long

Problem:    Debugger test may fail when $CWD is very long.
Solution:   Skip the test if the directory name is too long. (James McCoy,
            closes #10837)
diff --git a/src/version.c b/src/version.c
index b44c248..e3e7247 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    137,
+/**/
     136,
 /**/
     135,