Add a x11/xfce4 module, ideas largely borrowed from x11/gnome module.

This will greatly help when updating to the upcoming 4.6. Also shrinks a lot
port Makefiles, which will be soon converted to use it.
This will also deprecate Makefile.inc.

feedback ajacoutot@ steven@, ok ajacoutot@

x11/xfce4/xfce4.port.mk

@@ -0,0 +1,55 @@
+# $OpenBSD: xfce4.port.mk,v 1.1 2008/06/14 16:15:16 landry Exp $
+
+# Module for Xfce related ports, divided into three categories:
+# core, goodies, plugins.
+
+XFCE_DESKTOP_VERSION=	4.4.2
+CATEGORIES+=	x11/xfce4
+DIST_SUBDIR=	xfce4
+
+MAINTAINER?=	Landry Breuil <gaston@gcu.info>
+USE_X11?=	Yes
+USE_GMAKE?=	Yes
+EXTRACT_SUFX?=	.tar.bz2
+
+# needed for all ports but *-themes
+.if !defined(XFCE_NO_SRC)
+USE_LIBTOOL?=	Yes
+MODULES+=	devel/gettext textproc/intltool
+.endif
+
+# if version is not defined, it's the DE version
+.if !defined(XFCE_VERSION)
+XFCE_VERSION=	${XFCE_DESKTOP_VERSION}
+.endif
+
+# Set to 'yes' if there are .desktop files in the package list.
+.if defined(DESKTOP_FILES) && ${DESKTOP_FILES:L} == "yes"
+MODXFCE_RUN_DEPENDS+=	:desktop-file-utils-*:devel/desktop-file-utils
+.endif
+
+.if defined(XFCE_PLUGIN)
+HOMEPAGE?=	http://goodies.xfce.org/projects/panel-plugins/xfce4-${XFCE_PLUGIN}-plugin
+
+MASTER_SITES?=	http://goodies.xfce.org/releases/xfce4-${XFCE_PLUGIN}-plugin/
+DISTNAME=	xfce4-${XFCE_PLUGIN}-plugin-${XFCE_VERSION}
+PKGNAME?=	${DISTNAME:S/-plugin//}
+
+MODXFCE_LIB_DEPENDS=	xfce4panel.>=2::x11/xfce4/xfce4-panel
+.elif defined(XFCE_GOODIE)
+HOMEPAGE=?	http://goodies.xfce.org/projects/applications/${XFCE_GOODIE}
+
+MASTER_SITES?=	http://goodies.xfce.org/releases/${XFCE_GOODIE}/
+DISTNAME=	${XFCE_GOODIE}-${XFCE_VERSION}
+.elif defined(XFCE_PROJECT)
+HOMEPAGE=?	http://www.xfce.org/projects/${XFCE_PROJECT}
+
+MASTER_SITES?=	http://www.xfce.org/archive/xfce-${XFCE_DESKTOP_VERSION}/src/
+DISTNAME=	${XFCE_PROJECT}-${XFCE_VERSION}
+.endif
+
+LIB_DEPENDS+=	${MODXFCE_LIB_DEPENDS}
+RUN_DEPENDS+=	${MODXFCE_RUN_DEPENDS}
+CONFIGURE_STYLE?=gnu
+CONFIGURE_ENV+=	CPPFLAGS="-I${LOCALBASE}/include -I${X11BASE}/include" \
+		LDFLAGS="-L${LOCALBASE}/lib"