Fix db name validation. Closes issue 42.
Fix db name validation. Closes issue 42.

--HG--
extra : convert_revision : svn%3A7a298fb0-333a-0410-83e7-658617cd9cf3/trunk%40173

infinit/couchdb-python,djc/couchdb-python,Roger/couchdb-python,djc/couchdb-python