64bit time_t fix.

--- lib/Timer.hh.orig	Fri Mar 18 10:07:09 2005
+++ lib/Timer.hh	Tue Apr 25 16:42:58 2017
@@ -31,23 +31,17 @@
 #include <queue>
 #include <vector>
 
-// forward declare to avoid the header
-struct timeval;
+#include <sys/time.h>
 
 namespace bt {
 
   // use a wrapper class to avoid the header as well
-  struct timeval {
-    long tv_sec;
-    long tv_usec;
+  struct timeval : public ::timeval {
 
     inline timeval(void)
-      : tv_sec(0l), tv_usec(0l)
-    { }
-    inline timeval(long s, long u)
-      : tv_sec(s), tv_usec(u)
-    { }
-
+    { tv_sec = 0; tv_usec = 0; }
+    inline timeval(time_t s, long u)
+    { tv_sec = s; tv_usec = u; }
     bool operator<(const timeval &);
     timeval operator+(const timeval &);
     timeval &operator+=(const timeval &tv);
@@ -57,7 +51,7 @@ namespace bt {
     // POSIX<->bt conversion
     timeval(const ::timeval &);
     timeval &operator=(const ::timeval &);
-    operator ::timeval() const;
+//    operator ::timeval() const;
   };
 
   timeval normalizeTimeval(const timeval &tm);
@@ -106,7 +100,7 @@ namespace bt {
     inline void recurring(bool b)
     { recur = b; }
 
-    void setTimeout(long t);
+    void setTimeout(time_t t);
     void setTimeout(const timeval &t);
 
     void start(void);  // manager acquires timer