- Add installer package
- Enable native Windows SSL (SSPI and Schannel) support
to have comparable support to the often outdated
Microsoft curl variant (see https://curl.se/windows/microsoft.html)
- Set 'schannel' as default ssl backend
- Fix warning: mingw64-libcurl4.noarch: W: self-obsoletion mingw64-libcurl
obsoletes mingw64-libcurl
- Remove using unsupported configure options: --with-nss, --with-libidn,
--with-nss-deprecated
- Install curl-ca-bundle.crt, which is required at least for the Openssl
backend