Make repos.c compile.
Make repos.c compile.

* repos.c:

(svn_ruby_repos_t): New structure.
(repos_free): New function.  Finalizer for Svn::Repos objects.
(repos_open): Use svn_ruby_repos_t instead of svn_ruby_fs_t.

(svn_ruby_init_repos): Now Svn::Repos is a subclass of Object, not Svn::Fs.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion