de-glob std

[brson]

Globs are feature-gated because they are buggy and cause very hard-to-diagnose errors. Refactoring std often involves an explosion of resolve errors rooted in globs, which makes it very hard to change std sometimes. Remove all the globs to avoid this problem.

[HildarTheDorf]

Does this still need some work? I am willing to take a look, but I'd need some help not having git blow up in my face.

[lpy]

I will update the pull request later.

[fhahn]

I've started working on this issue. So far, I've de-globbed a couple of files but there are many more to go. I'll open a PR when I went through all files.

[z0w0]

Does this include just removing them from std, or also other core libraries like syntax where globs are used more liberally?