Set SVN ignore properties for the new testsuite directories

SVN does not recursively apply ignore patterns, so after creating a
new directory one should not forget to set its svn:ignore property
(otherwise `svn status` will be quite noisy after a testsuite run).

For new test directories, I just copied the property of an existing
test in the following way:

  cd testsuite/tests/basic
  svn propget svn:ignore > /tmp/test-ignore
  cd ../<NEW-DIR>
  svn propset svn:ignore -F /tmp/test-ignore .



git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15086 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Refresh .gitignore

After svn:ignore changes, from any git-svn repository you can run

  git svn show-ignore > .gitignore

to synchronize the .gitignore content.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15087 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02