RELEASE-NOTES: Synced with 32913182dc
opts: added some "SEE ALSO" references
configure.ac: remove checks for OpenSSL NPN/ALPN funcs again

... since the conditional in the code are now based on OpenSSL versions
instead to better support non-configure builds.
openssl: enable NPN separately from ALPN

... and allow building with nghttp2 but completely without NPN and ALPN,
as nghttp2 can still be used for plain-text HTTP.

Reported-by: Lucas Pardue
CURLOPT_DIRLISTONLY.3: Added information about the usage in POP3
CURLOPT_CUSTOMREQUEST.3: Fixed incomplete protocol list

Whilst the description included information about SMTP, the protocol
list only showed "TTP, FTP, IMAP, POP3".
CURLOPT_PINNEDPUBLICKEY.3: added details
build: added Watcom support to build with WinSSL.
curl_easy_setopt.3: Moved CURLOPT_DIRLISTONLY into PROTOCOL OPTIONS

...as this option affects more that just FTP.
curl_easy_setopt.3: Fixed lots of typos
code cleanup: Use 'CURLcode result'
CURLOPT_CONNECT_ONLY.3: Fixed incomplete protocol list

Added missing IMAP to the protocol list.
CURLOPT_GSSAPI_DELEGATION.3: Use GSS-API rather than GSSAPI

As implementations are refereed to GSS-API libraries as per the RFC and
GSSAPI typically refers to an authentication mechanism.
CURLOPT_CONNECT_ONLY.3: Removed "This option is implemented for..." text

As this is covered by the PROTOCOLS section and saves having to update
two parts of the document with the same information in future.
opts: Use common wording for user/password option names
ftplistparser: We prefer 'CURLcode result'
openssl: Use 'CURLcode result'

...and some minor code style changes.
openssl: Use 'CURLcode result'

More standardisation of CURLcode usage and coding style.
resume: consider a resume from [content-length] to be OK

Basically since servers often then don't respond well to this and
instead send the full contents and then libcurl would instead error out
with the assumption that the server doesn't support resume. As the data
is then already transfered, this is now considered fine.

Test case 1434 added to verify this. Test case 1042 slightly modified.

Reported-by: hugo
Bug: http://curl.haxx.se/bug/view.cgi?id=1443
openssl: Use 'CURLcode result'

More CURLcode fixes.