Introduce a fetchDebug global. Change the DEBUG macro so it only runs the

debugging code if fetchDebug is set.

PR:		bin/32615
MFC after:	1 week

lib/libfetch/common.h

@@ -59,7 +59,7 @@ int		 _fetch_add_entry(struct url_ent **, int *, int *,
 #define _url_seterr(n)	 _fetch_seterr(_url_errlist, n)
 
 #ifndef NDEBUG
-#define DEBUG(x) do x; while (0)
+#define DEBUG(x) do { if (fetchDebug) { x; } } while (0)
 #else
 #define DEBUG(x) do { } while (0)
 #endif

lib/libfetch/fetch.c

@@ -45,6 +45,7 @@ int	 fetchLastErrCode;
 char	 fetchLastErrString[MAXERRSTRING];
 int	 fetchTimeout;
 int	 fetchRestartCalls = 1;
+int	 fetchDebug;
 
 
 /*** Local data **************************************************************/

lib/libfetch/fetch.h

@@ -136,4 +136,7 @@ extern char	 fetchLastErrString[MAXERRSTRING];
 extern int	 fetchTimeout;
 extern int	 fetchRestartCalls;
 
+/* Extra verbosity */
+extern int	 fetchDebug;
+
 #endif