Update for MAME 0.209

[SirDice]

Hi,

Would somebody be willing to take a look at my patch? It's an update for
emulators/mame and emulators/mess. Patch was tested with poudriere and both
ports are working fine on a recent 12-STABLE.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236621

It's an orphaned port and I'm considering becoming it's maintainer. But I'm
not sure how much time it's going to take up. And how well this patch is
going to be received :)

Thank you for your attention,

Remko C.