add struct-info?, etc. primitives
add struct-info?, etc. primitives

vishesh/pycket,pycket/pycket,krono/pycket,pycket/pycket,pycket/pycket,cderici/pycket,vishesh/pycket,samth/pycket,krono/pycket,magnusmorton/pycket,vishesh/pycket,samth/pycket,samth/pycket,magnusmorton/pycket,cderici/pycket,krono/pycket,cderici/pycket,magnusmorton/pycket