add provide_condition_spec.rb supplies a default quality of 1.0
add provide_condition_spec.rb orders types with equal quality by parameter count
add provide_condition_spec.rb ignores the quality parameter when ordering by parameter count
add provide_condition_spec.rb poperly handles quoted strings in parameters
add provide_condition_spec.rb accepts both text/javascript and application/javascript for js
add provide_condition_spec.rb accepts both text/xml and application/xml for xml