Fix missing AMX flags in fakeamx
Fix missing AMX flags in fakeamx

Some AMX flags must be set on the fake AMX in order for amx_Exec()
to attempt to run the function and return AMX_ERR_INDEX.

Fixes #125.

WopsS/sampgdk,WopsS/sampgdk,WopsS/sampgdk,Zeex/sampgdk,Zeex/sampgdk,Zeex/sampgdk