- move `curl --version` into separate step.
- move configure log to separate step. Run on success, too.
- add step with `curl_config.h` dump (full and brief/sorted).
- make `autoreconf` a separate step.
- add each job configuration a short name.
- shorten job names.
Dedupe/drop redundant info, introduce abbreviations:
AM = autotools, CM = CMake, U = Unicode, R = Release, not -> `!`, etc.
Instead of mentioning `debug`, mentioned when it's not.
- simplify `PATH` forming for MSVC jobs.
It's sufficient to add the release binary directory of vcpkg, the debug one
is redundant.
Follow-up to e26cbe20cb#13979
- other minor tidy-ups.
Closes#14116
338f5ae680