c05b5cc ocamlbuild_test, remove test directory tree only if exists

Authored and Committed by Wojciech Meyer 11 years ago
    ocamlbuild_test, remove test directory tree only if exists
    
    git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13185 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02