Add working print_i8, print_hex_i8, print_hex_i16, print_hex_i32. Add a divmodu8() which returns both the quotient and the remainder. Fix a horrifying bug in __loadparams where it was forgetting to initialise Y. I'm amazed this ever worked (and that the test suite passed).
Add working print_i8, print_hex_i8, print_hex_i16, print_hex_i32. Add a
divmodu8() which returns both the quotient and the remainder. Fix a horrifying
bug in __loadparams where it was forgetting to initialise Y. I'm amazed this
ever worked (and that the test suite passed).

davidgiven/cowgol,davidgiven/cowgol