Avoid installing META files for labltk, camlp4 and ocamlbuild: Those are provided by their
respective packages now.

Index: findlib-1.7.1/configure
===================================================================
--- findlib-1.7.1.orig/configure
+++ findlib-1.7.1/configure
@@ -539,7 +539,7 @@ fi
 
 # Generate the META files now.
 
-l="$ldbm dynlink graphics num num-top str threads unix stdlib bigarray ocamldoc $llabltk $lcamlp4 $lobuild $lcomplibs $lbytes $lspacetime"
+l="$ldbm dynlink graphics num num-top str threads unix stdlib bigarray ocamldoc $lcomplibs $lbytes $lspacetime"
 
 for dir in site-lib-src/*; do
     # We do not really know if $dir is a directory.