use make to create fixnums in values_struct
small structs refactoring
Merge branch 'master' of https://github.com/samth/pycket
Merge branch 'master' of https://github.com/samth/pycket
Merge branch 'master' of https://github.com/samth/pycket
Merge branch 'master' of https://github.com/samth/pycket
comment out a strange prefabs test (with 1 field and 1 auto value, but 2 instead 1 argument values)