*actually* remove the caching and other weird bits of the branch

(classical case of git usage fail)
Merge branch 'master' of github.com:samth/pycket
remove some remnants from caching

and fix some problems
a failing test
fix tostring
fix translation
add comment
Merge branch 'master' into streaming
speed up test_eqv

(not really worth it, it seems, this saved 3 seconds)