To formalize they are now XML-compliant (with some asterisks.)
Also to help syntax highlighters work on them to make their content more
readable.
Also:
- Delete empty comment decorations.
- GHA/checksrc: simplify XML check.
- runtests: fail to load test data with XML prolog missing.
Follow-up to bfe6eb1c06#19927
Follow-up to 87ba80a6dfCloses#19946
Only actually needed servers should be listed and none is then implied
if no servers are listed.
Outputs a warning if "none" is still set as a server.
Closes#18466
Introduce new notation for CURLOPT_INTERFACE / --interface:
ifhost!<interface>!<host>
Binding to an interface doesn't set the address, and an interface can
have multiple addresses.
When binding to an address (without interface), the kernel is free to
choose the route, and it can route through any device that can access
the target address, not necessarily the one with the chosen address.
Moreover, it is possible for different interfaces to have the same IP
address, on which case we need to provide a way to be more specific.
Factor out the parsing part of interface option, and add unit tests:
1663.
Closes#13719
