Viktor Szakats 59bc9a1d44
configure: sort feature list, lowercase protocols, use backticks
- sort features case-insensitively to match `curl -V` and cmake.
  `sort -f` is POSIX, but check if it's available anyway.

- make protocols lowercase to match `curl -V` and cmake.

- replace two outlier `$()` with backticks.

Closes #14117
2024-07-09 04:13:04 +02:00
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