Feature: Use python to generate files

[WhoBrokeTheBuild]

This work was originally part of the CMake branch, which I am breaking up into smaller PRs This is being tagged as "Feature:" instead of "Build:" due to how many files it touches, I want to update the minor version number.

Add opcodes.csv to be parsed by gen-* scripts Convert opcbuiltins.h and tdishr.h into generated files, generated by opcodes.csv Update, Rename and Add gen-* scripts Move yacc/lex files out of yylex/ directories Update bootstrap to call new gen-* scripts