created my own version of jsawk or jshon

this one is based entirely on Perl (natch)
perhaps I'll write up some POD for it at some point
clean up `jsonp` a bit for public consumption
quash annoying "Exiting subroutine via next"
add clone function to copy all of $j to $_
add count function to count and summarize results
added p function to make pulling nested hash things easier
can now use csv() or tsv() to output lists of keys