QUIC: using native TLSv1.3 cipher suite constants. After BoringSSL aligned[1] with OpenSSL on TLS1_3_CK_* macros, and LibreSSL uses OpenSSL naming, our own variants can be dropped now. Compatibility is preserved with libraries that lack these macros. Additionally, transition to SSL_CIPHER_get_id() fixes build error with LibreSSL that doesn't implement SSL_CIPHER_get_protocol_id(). [1] https://boringssl.googlesource.com/boringssl/+/dfddbc4ded

# Copyright (C) Nginx, Inc.


if [ $USE_THREADS = YES ]; then

    if [ "$NGX_PLATFORM" = win32 ]; then
        cat << END

$0: --with-threads is not supported on Windows

END
        exit 1
    fi

    have=NGX_THREADS . auto/have
    CORE_DEPS="$CORE_DEPS $THREAD_POOL_DEPS"
    CORE_SRCS="$CORE_SRCS $THREAD_POOL_SRCS"
    CORE_LIBS="$CORE_LIBS -lpthread"
    NGX_LIBPTHREAD="-lpthread"
fi