$NetBSD: patch-ad,v 1.1 2008/10/11 22:33:56 dholland Exp $

Install header files in backwards compatible way.

--- libffi.pc.in.orig	2008-10-09 12:38:02.000000000 +0400
+++ libffi.pc.in	2008-10-09 12:41:54.000000000 +0400
@@ -1,7 +1,7 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
-includedir=${libdir}/@PACKAGE_NAME@-@PACKAGE_VERSION@/include
+includedir=@includedir@
 
 Name: @PACKAGE_NAME@
 Description: Library supporting Foreign Function Interfaces
