[Lazarus] Gtk 1.2 fixes (again)

[Sven Barth]

Am 13.02.2022 um 23:22 schrieb Kostas Michalopoulos via lazarus:
> Beyond that, as i wrote in the merge request, MUI is even more 
> "ancient" and yet Lazarus added support for it recently. I do not see 
> why it being called obsolete by its original developers means that one 
> couldn't work on it if they want, it is open source after all, the 
> entire point is having the freedom to do things like that.

While MUI might be ancient it's still actively used by current operating 
systems, namely MorphOS and AROS (and of course Amiga operating systems 
themselves, but they aren't actively developed anymore).

Note: I'm not critizing your effort, in fact I'm welcoming it as myself 
want to find the time to make sure that current Lazarus works correctly 
on PowerPC Mac with Carbon again.

Regards,
Sven