[openssl/openssl] 1dc2ae: Use $config{build_file} instead of $target{build_f...

[Richard Levitte]

  Branch: refs/heads/OpenSSL_1_1_1-stable
  Home:   https://github.com/openssl/openssl
  Commit: 1dc2ae414f8e34e957c41ac5933d9a033305501d
      https://github.com/openssl/openssl/commit/1dc2ae414f8e34e957c41ac5933d9a033305501d
  Author: Richard Levitte <levitte at openssl.org>
  Date:   2023-02-03 (Fri, 03 Feb 2023)

  Changed paths:
    M Configure

  Log Message:
  -----------
  Use $config{build_file} instead of $target{build_file}

If the user specifies an alternative build file than the default, this
alternative is recorded in $config{build_file}, not $target{build_file}.
Therefore, the former should be used, leaving the latter as a mere default.

This is a bug.

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre at ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/20174)