curl_easy_perform() invokes. It was previously unlocked at disconnect, which
could mean that it remained locked between multiple transfers. The DNS cache
may not live as long as the connection cache does, as they are separate.

To deal with the lack of DNS (host address) data availability in re-used
connections, libcurl now keeps a copy of the IP adress as a string, to be able
to show it even on subsequent requests on the same connection.

present in RFC959... so now (lib)curl supports it as well. --ftp-account and
CURLOPT_FTP_ACCOUNT set the account string. (The server may ask for an account
string after PASS have been sent away. The client responds with "ACCT [account
string]".) Added test case 228 and 229 to verify the functionality. Updated
the test FTP server to support ACCT somewhat.

use to detect libcurl and setup variables for the protocols the installed
libcurl supports: docs/libcurl/libcurl.m4

if you set CURLOPT_WRITEDATA - or you will experience crashes.

was written for it. I fixed and added test case 227 to verify it.  The curl.1
man page didn't mention the '+' so I added it.

argument is a curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you
must make sure that to pass in a type 'long' argument. */

contains %0a or %0d in the user, password or CWD parts. (A future fix would
include doing it for %00 as well - see KNOWN_BUGS for details.) Test case 225
and 226 were added to verify this

select() overhaul fix.

host name 'ip6-localhost' in /etc/hosts (or similar) since the test case uses
that host name to test the IPv6 name to address resolver.

fix one day.

-w option support 'http_connect' to make it easier to verify!