wip emterpreter
more wip
add output filename param to Building.js_optimizer
stub emterpreter script and stub test
start to emit trampolines
emit params to emstack
add utility to set pre_js in an asm module
do not cleanup non-asm code if not finalizing
simplify staticbump generation
start to modify the staticbump etc.
work towards adding in code
create new mem init
parse code into mem init
finalize trampoline addresses
sent EMT vars into asm, and use proper absolute code offsets
properly set up EMTSTACKTOP
make separate emterpreters for each return type, and set up asm validation and testing
fix EMTSTACKTOP passing
minor code tweaks
code appearance tweaks