Improve odict performance by making key search O(1)
Improve odict performance by making key search O(1)

skybon/babel,iamshubh22/babel,st4lk/babel,mbirtwell/babel,gutsy/babel,KIT-XXI/babel,srisankethu/babel,mbirtwell/babel,jmagnusson/babel,st4lk/babel,mitsuhiko/babel,upman/babel,skybon/babel,skybon/babel,srisankethu/babel,gutsy/babel,srisankethu/babel,mbirtwell/babel,python-babel/babel,moreati/babel,upman/babel,upman/babel,gutsy/babel,python-babel/babel,moreati/babel,KIT-XXI/babel,jmagnusson/babel,KIT-XXI/babel,iamshubh22/babel,mitsuhiko/babel,moreati/babel,iamshubh22/babel,jmagnusson/babel,st4lk/babel,mitsuhiko/babel