patch 8.2.0688: output clobbered if setting 'verbose' to see shell commands

Problem:    Output clobbered if setting 'verbose' to see shell commands.
Solution:   Only output "Searching for" when 'verbose' is 11 or higher.
diff --git a/src/version.c b/src/version.c
index 74fabce..fcc897a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    688,
+/**/
     687,
 /**/
     686,