64bit time_t fix.

Index: lib/Resource.cc
--- lib/Resource.cc.orig
+++ lib/Resource.cc
@@ -29,6 +29,7 @@
 #include <X11/Xresource.h>
 
 #include <stdio.h>
+#include <string.h>
 
 
 bt::Resource::Resource(void)
@@ -200,9 +201,23 @@ void bt::Resource::write(const char* resource, long va
 }
 
 
+void bt::Resource::write(const char* resource, long long value) {
+  char tmp[64];
+  sprintf(tmp, "%lld", value);
+  write(resource, tmp);
+}
+
+
 void bt::Resource::write(const char* resource, unsigned long value) {
   char tmp[64];
   sprintf(tmp, "%lu", value);
+  write(resource, tmp);
+}
+
+
+void bt::Resource::write(const char* resource, unsigned long long value) {
+  char tmp[64];
+  sprintf(tmp, "%llu", value);
   write(resource, tmp);
 }