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 * ssl_default_ciphersuites has been replaced by function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.

Also fixed a function name change in the version requirement bump

Rename x509_cert to x509_crt and add "compat-1.2.h"
include.
This would still need some more thorough conversion
in order to drop "compat-1.2.h" include.

... if built against a new enough version of NSS

... if built against a new enough version of NSS

... but allow them to be enabled/disabled explicitly.  The default
policy should be maintained at the NSS level.

... and use Curl_safefree() instead of free()

Patch-by: byte_bucket

Also, combined a couple of #ifdef sections

Port number zero is perfectly allowed to connect to. I moved to storing
the remote port number in an int so that -1 means undefined and 0-65535
can be used for legitimate port numbers.

Setting the TIMER_STARTSINGLE timestamp first in CONNECT has the
drawback that for actions that go back to the CONNECT state, the time
stamp is reset and for the multi_socket API there's no corresponding
Curl_expire() then so the timeout logic gets wrong!

Reported-by: Brad Spencer
Bug: http://curl.haxx.se/mail/lib-2014-02/0036.html

... as it isn't used then!

Remove slash/backslash problem, now only slashes are used,
Wmake automaticaly translate slash/backslash to proper version or tools are not sensitive for it.
Enable spaces in path.
Use internal rm command for all host platforms
Add error message if old Open Watcom version is used. Some old versions exhibit build problems for Curl latest version. Now only versions 1.8, 1.9 and 2.O beta are supported

Remove compilation message for platforms where size of long type
is equal size of int type.

For HTTP/2, we may read up everything including responde body with
header fields in Curl_http_readwrite_headers. If no content-length is
provided, curl waits for the connection close, which we emulate it
using conn->proto.httpc.closed = TRUE. The thing is if we read
everything, then http2_recv won't be called and we cannot signal the
HTTP/2 stream has closed. As a workaround, we return nonzero from
data_pending to call http2_recv.

nghttp2 has yet again extended its callback struct and this is an
attempt to make curl compile with nghttp2 from current git

Original commit message was:
 Don't omit CN verification in SChannel when an IP address is used.

Side-effect of this change:
 SChannel and CryptoAPI do not support the iPAddress subjectAltName
 according to RFC 2818. If present, SChannel will first compare the
 IP address to the dNSName subjectAltNames and then fallback to the
 most specific Common Name in the Subject field of the certificate.

 This means that after this change curl will not connect to SSL/TLS
 hosts as long as the IP address is not specified in the SAN or CN
 of the server certificate or the verifyhost option is disabled.

When asking for an SFTP directory with NOBODY set, no directory contents
should be retrieved.

Bug: http://curl.haxx.se/mail/lib-2014-02/0155.html

This patch enables HTTP POST/PUT in HTTP2.
We disabled Expect header field and  chunked transfer encoding
since HTTP2 forbids them.
In HTTP1, Curl sends small upload data with request headers, but
HTTP2 requires upload data must be in DATA frame separately.
So we added some conditionals to achieve this.

When the multi API is used we must also ignore SIGPIPE signals when
caused by things we do, like they can easily be generated by OpenSSL.

It now disables NTLM and GSS authentication methods, and produces
compilable code when SSL is enabled.