CID 1202732 warns on the previous use, although I cannot fine any
problems with it. I'm doing this change only to make the code use a more
familiar approach to accomplish the same thing.

This option can be used to enable/disable TLS False Start defined in the RFC
draft-bmoeller-tls-falsestart.

Reported-by: Frank Gevaerts

This change was made in CyaSSL/WolfSSL ver. 3.4.0

We prematurely changed protocol handler to HTTP/2 which made things very
slow (and wrong).

Reported-by: Stefan Eissing
Bug: https://github.com/bagder/curl/issues/169

Coverity CID 1288826

If a man page exists in the opts/ directory, it must also be referenced
either in curl_easy_setopt.3 or curl_multi_setopt.3

... if disabled at libcurl level.  Otherwise, we would allow to
negotiate NPN despite curl was invoked with the --no-npn option.

- Get rid of this flood of warnings in Windows mingw build:
warning: missing terminating " character

The warning is due to the carriage return. When msysgit checks out files
from the repo by default it converts the line endings to CRLF. Prior to
this change when mkhelp.pl processed the MANUAL and curl.1 in CRLF
format the trailing carriage returns caused unnecessary CR in the
output.

Using $< in a non-suffix rule context is a GNU make idiom.  This bug was
introduced in 7.41.0.

Reported-by: Stefan Eissing
Bug: https://github.com/bagder/curl/issues/169