racker/falcon — pull request #89 by rs-randallburt (2013-03-11 19:56:42+00:00)
Title: fix(Request): QUERY_STRING is not required to be present in env

Per PEP-333, QUERY_STRING may be empty or absent. It seems to be absent if using eventlet.wsgi.server so this change checks for
QUERY_STRING in env and behaves as before if present. If absent, this sets query_string to empty string.