HTTP/2: Move :authority before non-pseudo header fields
HTTP/2: Reset promised stream, not its associated stream.
http2: added some more logging for debugging stream problems
ntlm: Added support for SSPI package info query

Just as with the SSPI implementations of Digest and Negotiate added a
package info query so that libcurl can a) return a more appropriate
error code when the NTLM package is not supported and b) it can be of
use later to allocate a dynamic buffer for the Type-1 and Type-3
output tokens rather than use a fixed buffer of 1024 bytes.
ntlm: Fixed hard coded buffer for SSPI based auth packet generation

Given the SSPI package info query indicates a token size of 2888 bytes,
and as with the Winbind code and commit 9008f3d56, use a dynamic buffer
for the Type-1 and Type-3 message generation rather than a fixed buffer
of 1024 bytes.
curl_ntlm_msgs: make < 80 columns wide
RELEASE-NOTES: Synced with 159c3aafd8
tool_getparam.c: Fixed compilation warning

warning: `orig_opt' might be used uninitialized in this function
schannel: Fixed compilation warning in vtls.c

vtls.c:688:43: warning: unused parameter 'data'
sspi: Minor code tidy up to standardise coding style

Following the recent changes and in attempt to align the SSPI based
authentication code performed the following:

* Use NULL and SECBUFFVERSION rather than hard coded constants.
* Avoid comparison of zero in if statements.
* Standardised the buf and desc setup code.
docs: Update SPNEGO and GSS-API related doc sections

Reflect recent changes in SPNEGO and GSS-API code in the docs.
Update them with appropriate namings and remove visible spots for
GSS-Negotiate.
sasl_sspi: Fixed memory leak with not releasing Package Info struct

Curl_sasl_create_digest_md5_message() wouldn't free the Package Info
structure after QuerySecurityPackageInfo() had allocated it.
sasl: Introduced Curl_sasl_build_spn() for building a SPN

Various parts of the libcurl source code build a SPN for inclusion in
authentication data. This information is either used by our own native
generation routines or passed to authentication functions in third-party
libraries such as SSPI. However, some of these instances use fixed
buffers rather than dynamically allocated ones and not all of those that
should, convert to wide character strings in Unicode builds.

Implemented a common function that generates a SPN and performs the
wide character conversion where necessary.
sasl_sspi: Fixed SPN not being converted to wchar under Unicode builds

Curl_sasl_create_digest_md5_message() would simply cast the SPN variable
to a TCHAR when calling InitializeSecurityContext(). This meant that,
under Unicode builds, it would not be valid wide character string.

Updated to use the recently introduced Curl_sasl_build_spn() function
which performs the correct conversion for us.
sasl: Use a dynamic buffer for SPN generation

Updated Curl_sasl_create_digest_md5_message() to use a dynamic buffer
for the SPN generation via the recently introduced Curl_sasl_build_spn()
function rather than a fixed buffer of 128 characters.
sasl: Tidy up to rename SPN variable from URI
http_negotiate_sspi: Use a dynamic buffer for SPN generation

Updated to use a dynamic buffer for the SPN generation via the recently
introduced Curl_sasl_build_spn() function rather than a fixed buffer of
1024 characters, which should have been more than enough, but by using
the new function removes the need for another variable sname to do the
wide character conversion in Unicode builds.
http_negotiate_sspi: Tidy up to remove the get_gss_name() function

Due to the reduction of code in commit 3b924b29 of get_gss_name() the
function isn't necessary anymore.
sasl_sspi: Fixed missing free of challenge buffer on SPN failure
sasl_sspi: Fixed hard coded buffer for response generation

Given the SSPI package info query indicates a token size of 4096 bytes,
updated to use a dynamic buffer for the response message generation
rather than a fixed buffer of 1024 bytes.