Create numbers.lisp with some basic numeric functions
Use DOLIST instead of WHILE
Move over some numeric functions from boot.lisp
Leave only the minimum required for booting
DEFCOMPARISON for =
Variadic functions for * and /
Uses a new macro DEFINE-VARIADIC-OP, which also captures a pattern used
in + and -, and is used for them as well
Add /= function
Fix - and /
Introduce a new macro, as the one for + and * doesn't handle them
correctly
Add some tests for the new functions
Merge pull request #105 from orodley/numbers

Numeric functions