Lib: Expand timer recurrence to 64b

The period of recurent timers was stored in 32b field, despite it was
btime-compatible value in us. Therefore, it was limited to ~72 min,
which mas okay for most purposes, except configurable MRT dump periods.

Thanks to Felix Friedlander for the bugreport.

lib/timer.c

@@ -110,9 +110,9 @@ tm_dump(resource *r)
   if (t->randomize)
     debug("rand %d, ", t->randomize);
   if (t->recurrent)
-    debug("recur %d, ", t->recurrent);
+    debug("recur %ld, ", t->recurrent);
   if (t->expires)
-    debug("expires in %d ms)\n", (t->expires - current_time()) TO_MS);
+    debug("expires in %ld ms)\n", (t->expires - current_time()) TO_MS);
   else
     debug("inactive)\n");
 }

lib/timer.h

@@ -22,8 +22,8 @@ typedef struct timer
   void *data;
 
   btime expires;			/* 0=inactive */
+  btime recurrent;			/* Timer recurrence */
   uint randomize;			/* Amount of randomization */
-  uint recurrent;			/* Timer recurrence */
 
   int index;
 } timer;
@@ -72,7 +72,7 @@ tm_remains(timer *t)
 }
 
 static inline timer *
-tm_new_init(pool *p, void (*hook)(struct timer *), void *data, uint rec, uint rand)
+tm_new_init(pool *p, void (*hook)(struct timer *), void *data, btime rec, uint rand)
 {
   timer *t = tm_new(p);
   t->hook = hook;