Keep track of exported symbols and link them later.
Load the exports that tell us module info.

Thanks JPCSP.
Take the module info when starting the main module.

Fixes Ys Seven, Fieldrunners, Shadow of Destiny, maybe others.
Cleanup some todos and logging in exports.
Write an unknown syscall for unresolved imports.
Merge pull request #362 from unknownbrackets/module-exports

Process module exports and listen to them