Fix libnl pkg config file template.

SVN-Revision: 12945

package/libnl/patches/150-fix-libnl-pc-config.patch

+diff --git a/libnl-1.pc.in b/libnl-1.pc.in
+index 7ac8413..66a7cd9 100644
+--- a/libnl-1.pc.in
++++ b/libnl-1.pc.in
+@@ -1,7 +1,7 @@
+ prefix=@prefix@
+ exec_prefix=@prefix@
+ libdir=@libdir@
+-includedir=@prefix@/include
++includedir=@includedir@
+ 
+ Name: libnl
+ Description: Convenience library for netlink sockets