pouchdb/pouchdb — pull request #2001 by nolanlawson (2014-04-21 19:01:31+00:00)
Title: (#1990) - move allDocs keys query to adapter.js

This moves the allDocs() logic when opts.keys is
used to adapter.js, which allows to just do a
simple multi-key fetch for each non-http adapter.

This improves the performance of leveldb.js and should
not have an impact on the performance of websql.js or
idb.js. Plus it's less code.