table: removed data type words section

there were no data type words in the table and this section is not
necessary anyway since any data type word tokens (in other words,
internal functions with no arguments) can go in the plain word section
of the table
parser: removed use of token from exception throws

with plan to not create (allocate) token until valid token found, use of
token values (specifically column, but length also but was always one)
was replaced in throw statements to use current or updated position

removed mechanism for specifying alternate column in error (no longer
necessary since number tokens not parsed if numbers not allowed); also
removed from tester print error function

for numbers, position not updated until number found to be valid