Some code cleanup in svnserve.
Some code cleanup in svnserve.

* subversion/svnserve/serve.c
  (auth): Put the return parameter in front of all others.
          Expliciyly mark the pool as a SCRATCH_POOL.
  (internal_auth_request): Update caller.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1714316 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion