Fix autodetection of <sys/rtprio.h> which currently fails due to missing

typedefs provided by <sys/types.h>.

PR:		160597
Submitted by:	aakuusta@gmail.com

audio/xmp/Makefile

@@ -7,6 +7,7 @@
 
 PORTNAME=	xmp
 PORTVERSION=	3.4.1
+PORTREVISION=	1
 PORTEPOCH=	1
 CATEGORIES=	audio
 MASTER_SITES=	SF

audio/xmp/files/patch-audio__xmp__files__patch-configure

@@ -0,0 +1,14 @@
+--- /dev/null	1 Jan 1970 00:00:00 -0000
++++ audio/xmp/files/patch-configure	9 Sep 2011 18:02:27 -0000
+@@ -0,0 +1,11 @@
++--- configure~
+++++ configure
++@@ -5166,7 +5166,7 @@ done
++     fi
++     ;;
++ freebsd*)
++-    for ac_header in sys/resource.h sys/rtprio.h
+++    for ac_header in sys/types.h sys/resource.h sys/rtprio.h
++ do :
++   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
++ ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"