As the email protocols implement SASL authentication rather than IMAP,
POP3 and SMTP specific authentication, updated the authentication
keywords to reflect this.

In the initializer for len, there is no prototype for "strlen".
In this statement, there is no prototype for "memcpy".

Added support for falling back to <data> when <data1>, <data2>, etc...
don't exist in the <reply> section of a unit test.

Specifying user credentials when the SMTP server doesn't support
authentication would cause curl to display "No known authentication
mechanisms supported!" and return CURLE_LOGIN_DENIED.

Reported-by: Tom Sparrow
Bug: http://curl.haxx.se/mail/lib-2014-03/0173.html

The test is only valid when one of four SSL backends is in use,
and must otherwise return success.

The improved connection reuse logic would otherwise create a new
connection for each one, which isn't supported by the test
server, nor expected by the test.

This allows configure --disable-manual to run and build without having
to regenerate the src/tool_hugehelp.c file which otherwise is necessary
since we ship tarballs with that file present.

Reported-by: Remi Gacogne
Bug: http://curl.haxx.se/bug/view.cgi?id=1350

Reported-by: Richard Moore

There are server certificates used with IP address in the CN field, but
we MUST not allow wild cart certs for hostnames given as IP addresses
only. Therefore we must make Curl_cert_hostcheck() fail such attempts.

Bug: http://curl.haxx.se/docs/adv_20140326B.html
Reported-by: Richard Moore

In addition to FTP, other connection based protocols such as IMAP, POP3,
SMTP, SCP, SFTP and LDAP require a new connection when different log-in
credentials are specified. Fixed the detection logic to include these
other protocols.

Bug: http://curl.haxx.se/docs/adv_20140326A.html

For example when a URL is not specified or the headers file fails to
open.

The debug messages printed inside PolarSSL always seems to end with a
newline. So 'infof()' should not add one. Besides the trace 'line'
should be 'const'.

The parser skipped the initial letter, which presumably often is
whitespace but doesn't have to be.

Reported-by: Mike Hasselberg
Bug: http://curl.haxx.se/mail/lib-2014-03/0134.html

To better allow arguments like "1 to 9999" without flooding the terminal
with error messages, the given test cases range is now checked and only
test numbers with existing files are actually run.

It leads to the "next family" tries starting from the wrong point and thus
fails!

Bug: http://curl.haxx.se/bug/view.cgi?id=1337
Reported-by: ricker

Because of the socket is unblocking, PolarSSL does need call to getsock to
get the action to perform in multi environment.

In some cases, it might happen we have not received yet all data to perform
the handshake. ssh_handshake returns POLARSSL_ERR_NET_WANT_READ, the state
is updated but because of the getsock has not the proper #define macro to,
the library never prevents to select socket for input thus the socket will
never be awaken when last data is available. Thus it leads to timeout.

Remove all #ifdef/else/endif macros that ensure compatibility with polarssl
version previous than 1.3.

API has changed since version 1.3. A compatibility header has been created
to ensure forward compatibility for code using old API:
 * x509 certificate structure has been renamed to from x509_cert to
   x509_crt
 * new dedicated setter for RSA certificates ssl_set_own_cert_rsa,
   ssl_set_own_cert is for generic keys
 * ssl_default_ciphersuites has been replaced by function
   ssl_list_ciphersuites()

This patch drops the use of the compatibly header.