Bug: https://github.com/bagder/curl/issues/229
Reported-by: bsammon

Reported-by: John Marshall
Bug: https://github.com/bagder/curl/issues/225

... and some minor edits

Icecast versions 1.3.0 through 1.3.12 would reply with "ICY 200"
under certain conditions:

    client_wants_icy_headers (connection_t *con)
    {
            const char *val;

            if (!con)
                    return 1;

            val = get_user_agent (con);
            if (!val || !val[0] || strcmp (val, "(null)") == 0)
                    return 1;

            if (con->food.client->use_icy)
                    return 1;
            if (strncasecmp (val, "winamp", 6) == 0)
                    return 1;
            if (strncasecmp (val, "Shoutcast", 9) == 0)
                    return 1;

            return 0;
    }

So mainly if there is no 'user agent' or it is '(null)' or contains
'winamp' or 'Shoutcast'.

No mainstream distribution carries Icecast 1.3.x anymore, after all
it was released in 2002 and superseded by Icecast 2.x.

Disabling pipelining on multi handle with in-progress pipelined requests
leads to heap corruption and crash

- More descriptive fail message for NO_FILESYSTEM builds.
- Cosmetic changes.
- Change more of CURLOPT_SSL_CTX_* doc to not be OpenSSL specific.

Adds support for CURLOPT_SSL_CTX_FUNCTION when using CyaSSL, and better
handles CyaSSL instances using NO_FILESYSTEM.

--path-as-is is the command line option

Added docs in curl.1 and CURLOPT_PATH_AS_IS.3

Added test in test 1241

By making sure Curl_getconnectinfo() uses the correct connection cache
to find the last connection.

TLS False Start support requires iOS 7.0 or later, or OS X 10.9 or later.

This option can be used to enable/disable TLS False Start defined in the RFC
draft-bmoeller-tls-falsestart.

Reported-by: Frank Gevaerts

If a man page exists in the opts/ directory, it must also be referenced
either in curl_easy_setopt.3 or curl_multi_setopt.3

Using $< in a non-suffix rule context is a GNU make idiom.  This bug was
introduced in 7.41.0.