Use relative path to built c-ares tree libtool library

  without pkg-config.

timeval struct on VMS when building with _XOPEN_SOURCE_EXTENDED undefined due
to definition taking place in socket.h instead of time.h

Delegate c-ares linking magic on libtool and auto-makefiles when using
the uninstalled c-ares libtool archive built from the CVS embedded tree.

  PK11_CreateGenericObject() function.

  the auth credentials back in 7.19.0 and earlier while now you have to set ""
  to get the same effect. His patch brings back the ability to use NULL.

  for a failure properly.

  fine with Nokia 5th edition 1.0 SDK for Symbian.

systems which support external, undefined, symbols in shared libraries.

if library initialization has not been performed calling ares_library_init().

  out that the cookie parser would leak memory when it parses cookies that are
  received with domain, path etc set multiple times in the same header. While
  such a cookie is questionable, they occur in the wild and libcurl no longer
  leaks memory for them. I added such a header to test case 8.

forced to use nmake for VC builds early so that its also used for ares even if we find a GNU make first in path; simplified curl make call.