gssapi check. Cleans up curl-config --libs output when REQUIRE_LIB_DEPS=no

  easy handle if curl_easy_reset() was used between them. I fixed it and Brian
  verified that it cured his problem.

- Brian Ulm reported that if you first tried to download a non-existing SFTP
  file and then fetched an existing one and re-used the handle, libcurl would
  still report the second one as non-existing as well! I fixed it abd Brian
  verified that it cured his problem.

_USE_32BIT_TIME_T has been defined to get a 32-bit time_t

Michael Calmer)

usage

select/poll calls will only be retried upon EINTR failures as
it previously was in lib/select.c revision 1.29

In this way Curl_socket_ready() and Curl_poll() will again fail
on any select/poll errors different than EINTR.

files, as questioned by Mike Protts. SFTP does for me but SCP doesn't
so test 617 is disabled for now.

  a re-used connection where both requests used Negotiate.

compiled with errors. This behaviour is needed for autoconf macros which
rely on the ability to compile with or without errors, and is safer than
xlc's default of failing only upon severe errors.

121 - Kaspar Brand's and Guenter Knauf's work on the TLS extension Server Name
      Indication is now committed

122 - Progress callback not called during failed socket connect with the multi
      interface, is now simply pending a closure since no feedback has been
      received lately.

Added:

123 - Mike Protts' SFTP resume download

124 - Anatoli Tubman's fix for a Negotiate: crash

125 - Michal Marek's typechecker-gcc work

test code. Thanks to his curl_easy_setopt() typechecker work...

added get_ver.awk since c-ares is a standalone project, and should therefore also compile when cURL is absent.

fixed comments; fixed INSTDIR define, simplified rules;
changed to use get_ver.awk in current dir rather than the curl one.

whole operation completes or an unrecoverable condition is detected

Patch submitted by Kaspar Brand.

  forces it to prefer SSLv3.

  http://curl.haxx.se/bug/feature.cgi?id=1900014 that makes libcurl (built to
  use OpenSSL) support a full chain of certificates in a given PKCS12
  certificate.

  options as the lib/Makefile.vc6 already did.

Changes introduced in revision 1.43 were useless

  happened if you set the connection cache size to 1 and for example failed to
  login to an FTP site. Bug report #1896698
  (http://curl.haxx.se/bug/view.cgi?id=1896698)

Mentioned on the list by Michal Marek.