Made OS400 version compilable again

RtlGenRandom, has been located or not. This function is only available on
WinXP and later. When unavailable c-ares uses portable rand() function.

  CARES_HAVE_ARES_LIBRARY_INIT and CARES_HAVE_ARES_LIBRARY_CLEANUP
  to ease the use of new capabilities.

- Move ares_version() prototype to ares.h

Introduction of ares_library_init() and ares_library_cleanup()

  no_proxy which made it not skip the proxy if the URL entered contained a
  user name. I added test case 1101 to verify.

Extend displaying of logfiles upon first server start-up failure for http, https, ftp, ftps and tftp test harness servers.

thinking straight.

unconditionally

release, or bump or whatevere

the function we should use, while both curl_multi_socket() and
curl_multi_socket_all() should be killed!

I just posted about this decision on the curl-library list.

  only expose functions starting with ares_.