[PATCH] build-many-glibcs.py: Move sparcv8 to extra_glibcs

[Gabriel F. T. Gomes]

Hi, Adhemerval,

On Tue, 03 Dec 2019, Adhemerval Zanella wrote:

>It also fixes the sparcv9-linux-gnu-disable-multi-arch configuration.

Thanks for doing this.

>The resulting sparc possible build permutations are:
>
>  - sparc64-linux-gnu
>  - sparcv9-linux-gnu
>  - sparcv8-linux-gnu-leon3 (from extra_glibcs)
>  - sparc64-linux-gnu-disable-multi-arch (from extra_glibcs)
>  - sparcv9-linux-gnu-disable-multi-arch (from extra_glibcs)

Looks good to me.