incorrect configfsf.guess permissions for GMP 6.3.0

[Vincent Lefevre]

In the gmp-6.3.0.tar.xz tarball:

-rw-r--r-- tege/wheel    49936 2023-07-29 15:42:16 gmp-6.3.0/configfsf.guess

The execute permissions are missing. This yields the following error:

-bash-5.1$ ./configfsf.guess
-bash: ./configfsf.guess: The file access permissions do not allow the specified action.

One can use "sh ./configfsf.guess", but the GMP manual says

   * The output from running './config.guess', and from running
     './configfsf.guess' (might be the same).

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Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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