Following the fix in commit d6d58dd5 it is necessary to re-introduce
XOAUTH2 in the default enabled authentication mechanism, which was
removed in commit 7b2012f2, otherwise users will have to specify
AUTH=XOAUTH2 in the URL.

Note: OAuth 2.0 will only be used when the bearer is specified.

Closes #525

Regression from commit 9e8ced98 which meant if --oauth2-bearer was
specified but the SASL mechanism wasn't supported by the server then
the mechanism would be chosen.

- no point in repeating curl features that is already listed as features
  from the curl -V output

- remove the port numbers/unix domain path from the output unless
  verbose is used, as that is rarely interesting to users.

Added support to the OAuth 2.0 message function for host and port, in
order to accommodate the official OAUTHBEARER SASL mechanism which is
to be added shortly.

In addition to commit a215381c added the RTSP, RTMP and SMB protocols.

The curl_config.h file can be generated either from curl_config.h.cmake
or curl_config.h.in, depending on whether you're building using CMake or
the autotools.  The CMake template header doesn't include entries for
all of the protocols that you can disable, which (I think) means that
you can't actually disable those protocols when building via CMake.

Closes #523

BoringSSL implements `BIO_get_mem_data` as a function, instead of a
macro, and expects the output pointer to be a `char **`.  We have to add
an explicit cast to grab the pointer as a `const char **`.

Closes #524

We need 1.0.0 or later. Also verified by configure.

When referring to OAuth 2.0 we should use the official name rather the
SASL mechanism name.

The fix in 1a614c6c was wrong and would leed to free() of a fixed
string.

Pointed-out-by: Kamil Dudka

Because it's illogical to check for a 16-bit curl_off_t.

Ref: https://github.com/bagder/curl/issues/425#issuecomment-154964205

Bug: https://github.com/bagder/curl/issues/486
Closes https://github.com/bagder/curl/pull/487

... when it was within a string!

Closes #517

imap.c:657:13: error: assignment discards 'const' qualifier from pointer
target type [-Werror=discarded-qualifiers]

... it is just weird to include by default even if it still works.

The tftpd test server now logs all received options and thus all TFTP
test cases need to match them exactly.

Extended test 283 to use and verify --tftp-blksize.

- Set user info param to the socket returned by Curl_getconnectinfo,
regardless of if the socket is bad. Effectively this means the user info
param now will receive CURL_SOCKET_BAD instead of -1 on bad socket.

- Remove incorrect comments.

CURLINFO_ACTIVESOCKET is documented to write CURL_SOCKET_BAD to user
info param but prior to this change it wrote -1.

Bug: https://github.com/bagder/curl/pull/518
Reported-by: Marcel Raad

Rationale: when starting up a curl-using app, all cookies from the jar
are checked against each other. This was causing a startup delay in the
Fifth browser.

All tests pass.

Signed-off-by: Lauri Kasanen <cand@gmx.com>

Apparently there are sites out there that do redirects to URLs they
provide in plain UTF-8 or similar. Browsers and wget %-encode such
headers when doing a subsequent request. Now libcurl does too.

Added test 1138 to verify.

Closes #473

Closes #425

Fixes a name space pollution at the cost of programs using one of these
defines will no longer compile. However, the vast majority of libcurl
programs that do multipart formposts use curl_formadd() to build this
list.

Closes #506