curl's -P option easier.

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.

is being checked.

Also made the server retrying sleep only one second instead of three, to reduce
some waiting when fooling around with the servers.

case, all non-numeric prefixing letters are cut off to figure out the test
number.

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

GetCurrentProcess() twice; use a local variable.

1) the proxy environment variables are still read and used to set HTTP proxy

2) you couldn't disable http proxy with CURLOPT_PROXY (since the option was
   disabled)

party transfer tests or tests that need two FTP servers.

whatever) instance to run without overwriting the previous' logfiles

assumed this used the DICT protocol. While guessing protocols will remain
fuzzy, I've now made sure that the host names must start with "[protocol]."
for them to be a valid guessable name. I also removed "https" as a prefix that
indicates HTTPS, since we hardly ever see any host names using that.

Windows (unrelated to select). select() can never set errno
to EINTR on Windows.