Don't build nor install libevent compatibilty layer. the installed event.h

shadowed the systemwide one.
Prodded by & ok naddy@, also tested by sthen@

devel/libev/Makefile

@@ -1,9 +1,10 @@
-# $OpenBSD: Makefile,v 1.1.1.1 2009/09/02 19:19:43 landry Exp $
+# $OpenBSD: Makefile,v 1.2 2009/09/14 15:53:09 landry Exp $
 
 COMMENT =	high-performance event loop library
 
 DISTNAME =	libev-3.8
 CATEGORIES =	devel
+PKGNAME =	${DISTNAME}p0
 
 MAINTAINER =	Bapt <baptiste.daroussin@gmail.com>
 

devel/libev/patches/patch-Makefile_in

@@ -0,0 +1,15 @@
+$OpenBSD: patch-Makefile_in,v 1.1 2009/09/14 15:53:09 landry Exp $
+--- Makefile.in.orig	Mon Sep 14 16:00:44 2009
++++ Makefile.in	Mon Sep 14 16:00:57 2009
+@@ -213,9 +213,9 @@ EXTRA_DIST = LICENSE Changes libev.m4 autogen.sh \
+ 	     ev.3 ev.pod
+ 
+ man_MANS = ev.3
+-include_HEADERS = ev.h ev++.h event.h
++include_HEADERS = ev.h ev++.h
+ lib_LTLIBRARIES = libev.la
+-libev_la_SOURCES = ev.c event.c
++libev_la_SOURCES = ev.c
+ libev_la_LDFLAGS = -version-info $(VERSION_INFO)
+ all: config.h
+ 	$(MAKE) $(AM_MAKEFLAGS) all-am

devel/libev/pkg/PLIST

@@ -1,8 +1,7 @@
-@comment $OpenBSD: PLIST,v 1.1.1.1 2009/09/02 19:19:43 landry Exp $
+@comment $OpenBSD: PLIST,v 1.2 2009/09/14 15:53:09 landry Exp $
 %%SHARED%%
 include/ev++.h
 include/ev.h
-include/event.h
 lib/libev.a
 lib/libev.la
 @man man/man3/ev.3