we catch errors during the build process in stead of later during runtime.

Bgen now understands more constant definitions, but that means that a few which are not parseable in Python have to be blacklisted.

blacklisted, because they are not available in classic 68k programs,
and bgen doesn't have a way to put #ifdef/#endif in the generated
code. For now we only implement calls that work on all three models.

Lib:toolbox folder.