isaacs/npm — pull request #1583 by morganrallen (2011-10-21 23:35:47+00:00)
Title: Multi-registry support

Adds support in the form comma seperated urls in npmrc

registry = http://some.probably.local.couch.db/registry,http://isaacs.iriscouch.com

if there is a failure (say 404) it will try again with the next until
there are no more

Hopefully this fits into the original flow. It took me a while to figure out whats what.