64-bit time_t

Index: plugins/cram.c
--- plugins/cram.c.orig
+++ plugins/cram.c
@@ -135,7 +135,7 @@ static char *gettime(sasl_server_params_t *sparams)
     
     /* the bottom bits are really the only random ones so if
        we overflow we don't want to loose them */
-    snprintf(ret,15,"%lu",t%(0xFFFFFF));
+    snprintf(ret,15,"%lld",t%(0xFFFFFF));
     
     return ret;
 }