remove unused code
1.18.1-rc: working on supporting of emscripten
OS 1.18.2: add fake file, it's used to generate call stack properly in emscripten
add optimization options
add extensions (url, base64, datetime, json) for emscripten
add speed test
working on integration: OS <=> JS
OS 1.18.2: os-vm-js.js
enable $ for the first char of variable, function instance has prototype system similar to JS
working on integration: OS <=> JS
add malloc id for debug possibility
fix typo
remove debug code of malloc
fix emscripten compilation warning
Merge pull request #17 from unitpoint/master

sync with unitpoint/master