Add JavaHL tests for svn_ra_get_file_revs.

* subversion/bindings/javahl/tests/org/apache/subversion/javahl/SVNRemoteTests.java
  (SVNRemoteTests.testGetFileRevisions): New test case.

* subversion/bindings/javahl/src/org/apache/subversion/javahl/ISVNRemote.java
  (ISVNRemote.FileRevision.getPropertiesDelta): Fix docstring.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1510503 13f79535-47bb-0310-9956-ffa450edef68