Summary:
It's silly to use `eden prefetch --no-prefetch` to efficiently glob
for filenames. Introduce an `eden glob` command which resolves a glob
relative to the current working directory.
Reviewed By: genevievehelsel
Differential Revision: D25450358
fbshipit-source-id: 45d6dc870d21510e51d5662c75e80385886899fc
