bug fixes

                                  Changelog

Daniel (16 September)

- Doing PUT with --digest failed, as reported in bug report #805853.

- Using --anyauth that picked NTLM, and then a redirect closed the connection

  and took curl to a second NTLM page made curl fail. Test case #806328

  identified the problem.

Daniel (14 September)

- codemastr brought a patch for ares to make the Windows portions of it work

  properly on NT4. I uploaded a new diff and updated the docs on where to get

  it etc.

- Jeff Pohlmeyer tracked down a very hard-to-find bug where we removed a

  cached DNS entry even though it may be in use, which caused "random" memory

  to get overwritten and thus "random" crashes.