Simutrans: bump version to 122.0

[kenmays]

Cleanup simutrans folder for Beta3.

[korli]

Could you also update to 122.0 ? aburch/simutrans@ec1af84

[kenmays]

@korli - Updated to simutrans 122.0.

[korli]

@kenmays I take you tested on x86 and x86_64?

[kenmays]

@korli - Yes.

[korli]

@kenmays please explain how the requirement "simutrans_pakset >= 122.0" could be possibly fulfilled?

[kenmays]

Not a BUILD req.

[Begasus]

Build failed on R1/Beta2 here (32bit): error: no matching function for call to 'clamp....'

[kenmays]

@Begasus - SImutrans on Haiku is mainly a 64-bit build. We can review after R1B3 release for a x86 build.

[korli]

clamp

@kenmays this shouldn't be a big deal.
clamp is a template function which only takes three times the same type as argument.
https://github.com/aburch/simutrans/blob/a6eaf80a8702f344ad2f68f805915c793f96193f/macros.h#L33
it's a matter of forcing types to get the template function found.