calcurse uses long for times all over the place; dirty fix for 32-bit
arch with 64-bit time_t

Index: src/args.c
--- src/args.c.orig
+++ src/args.c
@@ -251,10 +251,11 @@ static void next_arg(void)
 /*
  * Print the date on stdout.
  */
-static void arg_print_date(long date)
+static void arg_print_date(long date_l)
 {
 	char date_str[BUFSIZ];
 	struct tm lt;
+	time_t date = date_l;
 
 	localtime_r((time_t *) & date, &lt);
 	strftime(date_str, BUFSIZ, conf.output_datefmt, &lt);