Build Linker

[cretz]

Linker:

• Command is "link"
• Output is a class w/ named fields representing each module. Setting these fields would be a way to cross-link maybe?
• Has parameterless methods for get-or-create-style lazy access to the module (not sure if it needs to be synchronized)
• The creating of the other modules calls the parameterless methods of its dependencies
• Maybe with-module-dep-as-params version of each method and that's what does the actual create
• Classes accepts args array which does NOT include the prog name and is
• Options
  • Method to call on main
  • Emscripten-support (includes adding it to module list AND calling "main" or erroring if we find multiple "mains")
  • Embed emscripten - basically shade the emscripten env classes