Define INFTIM if it isn't already.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@732 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/mgt_event.c

@@ -15,6 +15,11 @@
 #include "miniobj.h"
 #include "binary_heap.h"
 
+/* INFTIM indicates an infinite timeout for poll(2) */
+#ifndef INFTIM
+#define INFTIM -1
+#endif
+
 struct evsig {
 	struct evbase		*evb;
 	struct ev		*ev;