The gemini protocol's "speculative specification" is documented  at the
following URLs:

  https://gemini.circumlunar.space/docs/spec-spec.txt
  gopher://gemini.circumlunar.space/1/docs/spec-spec.txt
  gemini://gemini.circumlunar.space/docs/spec-spec.txt

This patch introduces preliminary support for version 0.11.0 of the
specification, as of March 1st 2020.

When wolfSSL is built with its OpenSSL API layer, it fetures the same DES*
functions that OpenSSL has. This change take advantage of that.

Co-authored-by: Daniel Stenberg
Closes #5556
Fixes #5548

Since the connection can be used by many independent requests (using
HTTP/2 or HTTP/3), things like user-agent and other transfer-specific
data MUST NOT be kept connection oriented as it could lead to requests
getting the wrong string for their requests. This struct data was
lingering like this due to old HTTP1 legacy thinking where it didn't
mattered..

Fixes #5566
Closes #5567

It was superfluous since we have the list.size alredy

Reported-by: Jay Satiro
Fixes #5553
Closes #5563

When asking for a specific feature to be shared in the share object,
that bit was previously set unconditionally even if the shared feature
failed or otherwise wouldn't work.

Closes #5554

Instead of discussing if there's value or meaning (implied or not) in
the colors, let's use words without the same possibly negative
associations.

Closes #5546

The SOCKS4/5 state machines weren't properly terminated when the proxy
connection got closed, leading to a busy-loop.

Reported-By: zloi-user on github
Fixes #5532
Closes #5542

Closes #5540

To reduce the amount of allocations needed for creating a Curl_addrinfo
struct, make a single larger malloc instead of three separate smaller
ones.

Closes #5533

quiche now requires the application to explicitly set the keylog path
for each connection, rather than reading the environment variable
itself.

Closes #5541