varname change. thx ljharb.
some debugging/statistics code.

commented out because it slows down tests even more
variable name change.
forgot to remove this console.log call previously :-\
Fixed bug caused by previously freed data getting added to the
last bigit of a new sum.
Changed tests of subtraction and addition to use *temp*
memory storage.
Switched multiplication tests to temp memory storage
just a bunch of mess.
algorithms should be more or less ok, but the memory management gets corrupt even while testing addition. that's the simples algorithm, so that should make it easier to find the bug
baseconstant
random debug files which will be removed later
All tests pass.
File to contain most of debug functions.
Passing all integer.js tests.