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.

and the string contains a newline...

  better control at the exact state of the connection's SSL status so that we
  know exactly when it has completed the SSL negotiation or not so that there
  won't be accidental re-uses of connections that are wrongly believed to be
  in SSL-completed-negotiate state.

  such as the CURLOPT_SSL_CTX_FUNCTION one treat that as if it was a Location:
  following. The patch that introduced this feature was done for 7.11.0, but
  this code and functionality has been broken since about 7.15.4 (March 2006)
  with the introduction of non-blocking OpenSSL "connects".

  It was a hack to begin with and since it doesn't work and hasn't worked
  correctly for a long time and nobody has even noticed, I consider it a very
  suitable subject for plain removal. And so it was done.

http://sourceforge.net/tracker/index.php?func=detail&aid=1767276&group_id=976&atid=350976
Submitted by Kaspar Brand.

Remove redundant and unreachable log message.

replaced fstat() with stat() call and bail out if local file not found.

Log some more error descriptions.

moved sample program defines into separate Makefile.inc so that other makefiles can pick up the defines from there.

  'enumerated type mixed with another type'

and

  'variable was set but never used'