History of convertMnemonic 1 change

In src/cpu/buildtables.py, lines 146–179 on riscv-1. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 146,179:src/cpu/buildtables.py.