Also produce a bytecode.rpyb file that does the same as un.rpyc

Merge pull request CensoredUsername#96 from kapilgain/dev

Fixes CensoredUsername#95: Correct the variable name

Handle SL2 as clauses

Also support menu arguments

Support temporary say attributes and say arguments

Handle passing args to use expressions properly

Fix typo in unrpyc-compile.py

Fix a bug in un.rpyc and also add support for RevertableDict's in the…

… AST

ren'py started leaking RevertableLists and OrderedDicts into the AST,…

… so allow decompilation of those. Make improvement to astdump so we can actually see where they end up from in the AST.

Resolve CensoredUsername#74: Some games have more script files than f…

…ile handles that the OS support, so read them all straight into memory instead of keeping the file descriptors open