Added: Frequent calling of user progress callback

since that is the API yassl attempts to provide

Curl_poll() which is called whenever not a single valid file descriptor is
passed to these functions.

Improve readibility using a poll() macro to replace WSApoll().

Dependencies are now put in external file depend.dj.

CURL_DEBUG is defined.

  you can now use [1-1] without curl complaining.

it and avoid it, even if this cripples the CCC command

Added some more debug logs.

'crypto' tests aren't dependent on SSL.  Compiling with
--disable-crypto-auth will cause test failures, however.

libldap when available in liblber.

multi interface

  1) the progress callback gets called more frequently (at times)
  2) libcurl *might* call the callback when it receives a signal

appropriate test case to use it.  For now, this is treated the same as the
"SSL" feature because curl doesn't list it separately.

  machine type too.

  upload a file it couldn't open. Bug #1676581
  (http://curl.haxx.se/bug/view.cgi?id=1676581)

test, fixing KNOWN_BUGS #11.  Fixed some tests to more accurately specify
their required servers and features.