AMXX 1.8.2+, likely. The only thing I see is hamdata.ini, you should probably not update this file, values have been changed after the steam update. But it's manually fixable. If you want to use 1.8.2/3 for example, because of some fixes or many missing virtual functions have been added, you can fix file like this: you keep "pev" and "base" and for tfc linux only you add +2 to all values.
By the way, If you want I can see for integrating schnitzelmaker's changes for 1.8.3-dev.