switch OpenVPN to compile with pthreads, since this is needed for plugins

like ldap auth.
ok bernd@, sthen@

net/openvpn/Makefile

@@ -1,10 +1,10 @@
-# $OpenBSD: Makefile,v 1.21 2009/03/08 15:56:52 martin Exp $
+# $OpenBSD: Makefile,v 1.22 2009/05/10 13:59:35 fkr Exp $
 
 COMMENT=	easy-to-use, robust, and highly configurable VPN
 
 VERSION=	2.1_rc15
 DISTNAME=	openvpn-${VERSION}
-PKGNAME=	${DISTNAME:S/_//g}p0
+PKGNAME=	${DISTNAME:S/_//g}p1
 CATEGORIES=	net security
 
 HOMEPAGE=	http://openvpn.net/
@@ -16,7 +16,7 @@ PERMIT_PACKAGE_CDROM=	Yes
 PERMIT_PACKAGE_FTP=	Yes
 PERMIT_DISTFILES_CDROM= Yes
 PERMIT_DISTFILES_FTP=	Yes
-WANTLIB=		c crypto ssl 
+WANTLIB=		c crypto ssl pthread
 
 MASTER_SITES=	${HOMEPAGE}/release/
 
@@ -27,8 +27,7 @@ SEPARATE_BUILD=	concurrent
 FAKE=		lib
 CONFIGURE_STYLE=gnu
 
-# pthread support is supposed to be unstable on OpenBSD
-CONFIGURE_ARGS+=--disable-pthread \
+CONFIGURE_ARGS+=--enable-pthread \
 		--with-lzo-headers=${DEPBASE}/include \
 		--with-lzo-lib=${DEPBASE}/lib \
 		--enable-password-save

net/openvpn/patches/patch-configure

@@ -0,0 +1,12 @@
+$OpenBSD: patch-configure,v 1.1 2009/05/10 13:59:35 fkr Exp $
+--- configure.orig	Sun May  3 03:42:03 2009
++++ configure	Sun May  3 03:43:03 2009
+@@ -10326,8 +10326,6 @@ if test x"$acx_pthread_ok" = xyes; then
+ 
+ 	    case "$target" in
+ 	    *openbsd*)
+-		{ echo "$as_me:$LINENO: result: WARNING: pthread support on OpenBSD is unstable!" >&5
+-echo "${ECHO_T}WARNING: pthread support on OpenBSD is unstable!" >&6; }
+ 		CFLAGS="$CFLAGS -pthread"
+ 		;;
+ 	    esac