Make ca-certificates compile without patch command

component/ca-certificates/buildout.cfg

 # CA certificates
 
 [buildout]
+
+extends =
+  ../patch/buildout.cfg
+
 parts =
   ca-certificates
 
@@ -16,6 +20,7 @@ download-only = true
 recipe = hexagonit.recipe.cmmi
 version = 20120623
 url = ftp://ftp.free.fr/mirrors/ftp.debian.org/pool/main/c/ca-certificates/ca-certificates_${:version}.tar.gz
+patch-binary = ${patch:location}/bin/patch
 patches =
   ${ca-certificates-sbin-dir.patch:location}/${ca-certificates-sbin-dir.patch:filename}
 patch-options = -p0