patch 8.2.5088: value of cmod_verbose is a bit complicated to use

Problem:    Value of cmod_verbose is a bit complicated to use.
Solution:   Use zero for not set, value + 1 when set. (closes #10564)
diff --git a/src/version.c b/src/version.c
index 47b5382..02600f7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    5088,
+/**/
     5087,
 /**/
     5086,