On the fsfs-lock-many branch: convert the server-side unlocking that
happens after a commit to svn_repos_fs_unlock2.

* subversion/libsvn_ra_local/ra_plugin.c
  (deltify_etc): Use svn_repos_fs_unlock2.

* subversion/mod_dav_svn/version.c
  (release_locks): Use svn_repos_fs_unlock2.

* subversion/svnserve/serve.c
  (unlock_paths): Use svn_repos_fs_unlock2.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-lock-many@1572034 13f79535-47bb-0310-9956-ffa450edef68