table: start using new alternate codes map

added temporary alternate code and count access functions

modified parts of translator to use alternate codes map; detection of
unary operator code and change to binary operator in get expression;
change to function with different argument data type and alternate code
for more arguments in process internal function

switched the subtract code (two double operands) with subtract code with
integer first operand so that the alternate code map gets set up the
same way that the current associated code array is initialized (since
the associate code array is still being used find code function, which
is being used for other codes that don't have entries in the new
alternate code map yet