buildconf is not used since #5853
Closes #7746
% cd ..
% git clone https://github.com/curl/curl
% cd curl
- % ./buildconf
+ % autoreconf -fi
% LDFLAGS="-Wl,-rpath,<somewhere1>/lib" ./configure --with-openssl=<somewhere1> --with-nghttp3=<somewhere2> --with-ngtcp2=<somewhere3>
% make
% cd ..
% git clone https://github.com/curl/curl
% cd curl
- % ./buildconf
+ % autoreconf -fi
% ./configure --without-openssl --with-gnutls=<somewhere1> --with-nghttp3=<somewhere2> --with-ngtcp2=<somewhere3>
% make
% cd ..
% git clone https://github.com/curl/curl
% cd curl
- % ./buildconf
+ % autoreconf -fi
% ./configure LDFLAGS="-Wl,-rpath,$PWD/../quiche/target/release" --with-openssl=$PWD/../quiche/deps/boringssl/src --with-quiche=$PWD/../quiche/target/release
% make