Use common definition for FinalizeError
fhdl/autofragment: empty build_fragment by default
fhdl/autofragment: fix submodules
fhdl/tools/flat_iteration: generalize
fhdl/autofragment: remove legacy functions
migen/fhdl/autofragment: factorize
bank/description: AutoReg
bank/csrgen: BankArray
bank/description/AutoReg: check that get_memories and get_registers are callable
fhdl/module: replace autofragment
bus/asmibus: use fhdl.module API
bank/eventmanager: use module and autoreg
Fix Register name conflict between Pytholite and Bank
bus/asmibus: use implicit finalization
README: update
fhdl/tracer: remove leading underscores from names
fhdl/tracer: recognize LOAD_DEREF opcode
fhdl/tracer: recognize CALL_FUNCTION_VAR opcode
bank: automatic register naming
fhdl/specials/Memory: automatic name#