Advanced Rogue 5: don't declare getenv() in rogue.h.

stdlib.h can declare it better.

arogue5/init.c

@@ -15,6 +15,7 @@
 #include "curses.h"
 #include <ctype.h>
 #include <string.h>
+#include <stdlib.h>
 #include "rogue.h"
 #include "mach_dep.h"
 

arogue5/rogue.h

@@ -950,7 +950,7 @@ struct object		*wield_weap();
 struct room		*roomin();
 struct trap		*trap_at();
 
-char	*getenv(), *tr_name(), *new(), 
+char	*tr_name(), *new(), 
 	*vowelstr(), *inv_name(), 
 	*ctime(), *num(), *ring_num(), *misc_num(), *blesscurse(), *typ_name(),
 	*weap_name(), *misc_name();