add eliminator test
comment on separate compilation of workers
rewrite eliminator in js
simplify eliminator
tiny eliminator optimization
misc eliminator optimizations
more misc eliminator optimizations
optimize newline removal in eliminator
remove unneeded js optimizer re-parse
include eliminator as js optimizer pass
integrate eliminator as js optimizer pass
remove no longer needed coffeescript
fix eliminator bug where X[y] would take X into account for variable effects, preventing optimization
note 'seq' (x,y,z) nodes as modifying control flow and invalidating elimination
Fix -O1 warning and use proper pointers for Jansson library.

See details: https://github.com/kripken/emscripten/pull/636#issuecomment-9456782
rewrite of eliminator to better approach
remove var x; of completely unused vars, and restore previous test cases
test fix
test fixes
eliminate in if nodes