Let this build on gcc2 arch; same thing as recent diff for www/lighttpd.

From Brad, following a report from Sevan.

www/spawn-fcgi/Makefile

@@ -1,8 +1,9 @@
-# $OpenBSD: Makefile,v 1.7 2009/09/29 07:33:31 sthen Exp $
+# $OpenBSD: Makefile,v 1.8 2010/07/06 21:10:50 sthen Exp $
 
 COMMENT=	spawn FastCGI processes
 
 DISTNAME=	spawn-fcgi-1.6.3
+PKGNAME=	${DISTNAME}p0
 CATEGORIES=	www
 MASTER_SITES=	http://www.lighttpd.net/download/
 
@@ -17,6 +18,7 @@ PERMIT_DISTFILES_CDROM=	Yes
 PERMIT_DISTFILES_FTP=	Yes
 WANTLIB=		c
 
-CONFIGURE_STYLE= gnu
+CONFIGURE_STYLE= autoconf
+AUTOCONF_VERSION= 2.64
 
 .include <bsd.port.mk>

www/spawn-fcgi/patches/patch-configure_ac

@@ -0,0 +1,22 @@
+$OpenBSD: patch-configure_ac,v 1.1 2010/07/06 21:10:50 sthen Exp $
+--- configure.ac.orig	Tue Jul  6 15:22:08 2010
++++ configure.ac	Tue Jul  6 15:22:43 2010
+@@ -69,7 +69,17 @@ fi
+ 
+ # check for extra compiler options (warning options)
+ if test "${GCC}" = "yes"; then
+-    CFLAGS="${CFLAGS} -Wall -W -Wshadow -pedantic -std=gnu99"
++    CFLAGS="${CFLAGS} -Wall -W -Wshadow -pedantic"
++
++    # Use std=gnu99 if we have new enough GCC
++    old_cflags=${CFLAGS}
++    CFLAGS="-std=gnu99"
++    AC_TRY_COMPILE([
++    ],, [
++      CFLAGS="${CFLAGS} $old_cflags"
++    ], [
++      CFLAGS="${old_cflags}"
++    ])
+ fi
+ 
+ AC_ARG_ENABLE(extra-warnings,