Alpha fails to build because ioctl_req_t is defined as unsigned long int.

$OpenBSD: patch-src_baconfig_h,v 1.1 2009/11/08 01:26:08 merdely Exp $
--- src/baconfig.h.orig	Fri Nov  6 10:46:05 2009
+++ src/baconfig.h	Fri Nov  6 10:45:43 2009
@@ -647,6 +647,11 @@ int  m_msg(const char *file, int line, POOLMEM *&pool_
 #define ioctl_req_t int
 #endif
 
+#if defined (__OpenBSD__) && defined (__alpha__)
+#undef  ioctl_req_t
+#define ioctl_req_t unsigned long int
+#endif
+
 #ifdef HAVE_OSF1_OS
 #undef  ioctl_req_t
 #define ioctl_req_t int
