Implement isle_s. Add to string conversions.
Fix the order of nqp-compiler.js dependencies.
Avoid running nqp/t/nqp/19-readline.txt as a test.
Take the lexical scope from the correct module when loading the setting multiple times.
Add a ModuleLoader written partially in nqp that does globals merging.

That makes standalone nqp pass all tests up to 31.