module: always decorate thrown errors

This provides more information when encountering a syntax or similar
error when executing a file with require().

Fixes: https://github.com/nodejs/node/issues/4286
PR-URL: https://github.com/nodejs/node/pull/4287


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>