$NetBSD$

NetBSD editline keeps header files in "readline", not "editline".
Same applies to DragonFly.

--- src/gp_hist.h.orig	2008-12-15 07:18:36.000000000 +0300
+++ src/gp_hist.h	2009-09-14 17:12:18.000000000 +0400
@@ -70,7 +70,7 @@
  * (almost) compatible readline relacement
  */
 #if defined(HAVE_LIBEDITLINE)
-# include <editline/readline.h>
+# include <readline/history.h>
 #endif
 
 #if defined(READLINE) && !defined(HAVE_LIBREADLINE) && !defined(HAVE_LIBEDITLINE)
