Make JavaHL tests run without being installed on OS X.

* Makefile.in
  (TEST_SHLIB_VAR_JAVAHL): New variable.
  (check-tigris-javahl, check-apache-javahl): Adjust these targets to setup
    the DYLD_LIBRARY_PATH before running the tests.  While I'm here fix some
    missing quoting that would have broken the tests if a path had a space in
    in it.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1535115 13f79535-47bb-0310-9956-ffa450edef68