Set up quiescence timer for any created bucket.

cbugg: close bug-521
Change default static path to public cbfs.

cbugg: close bug-468 bug-485
Remove hints of style.  There's no style here.
Added another copyright header.
Implement bucketsStreaming API

cbugg: close bug-527
Build fix for new DDocs type.
Support for returning *why* a vbucket couldn't be retrieved.

Often nil.  Sometimes because the bucket is dead.  We want to know
that one so we can drop connections on it.
Drop connections accessing closed buckets.

cbugg: close bug-528 bug-513
Automatically create database directory.

cbugg: close bug-526