master
tidy-up: `.gitignore` lines mostly
tidy-up: make 'CA' uppercase, where missing
tidy-up: docs, comments, typos, whitespace
build: minor debug option message fixes/improvements
build: always use local `inet_pton()`/`inet_ntop()` implementations
curl_ed25519: add GnuTLS support (via nettle, hogweed)
m4: drop redundant conditions in TLS library detections
configure: remove double check for GnuTLS
tidy-up: miscellaneous
autotools: tidy-up `if` expressions
configure: link `-lcrypt32` instead of `-lm` for wolfSSL on Windows
configure: tidy up comments