Update JavaHL to use the revised svn_repos_load_fs API.

[in subversion/bindings/javahl/src/org/apache/subversion/javahl]
* ISVNRepos.java, SVNRepos.java (ISVNRepos.load): Add a new overload
   of this method that accepts start and end revision arguments.

[in subversion/bindings/javahl/native]
* SVNRepos.h, SVNRepos.cpp (SVNRepos::load): Update native implementaition.
* org_apache_subversion_javahl_SVNRepos.cpp
  (Java_org_apache_subversion_javahl_SVNRepos_load): Update JNI wrapper.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1457253 13f79535-47bb-0310-9956-ffa450edef68