npm/npm — pull request #5378 by mmalecki (2014-05-30 00:01:33+00:00)
Title: Use `npm.config.get('prefix')` instead of `globalPrefix` getter

`defaults` getter in `npmconf`'s `config-defs.js` covers all the cases
we need for global prefix resolution.

`globalPrefix` getter remains unused and should be removed from
`npmconf`.

Fixes #5343.