[CM] ; floor argument 93.649190420188-93.649190420188i is a complex, but should

[Bill Schottstaedt]

> floor argument 93.649190420188-93.649190420188i is a complex

Thanks for the bug report!  With Rick's help, I got the windows cm
running in wine, and I think this bug is due to the lack of complex
number support in s7 + Visual C++ (we might be able to get around 
that) coupled with a slightly lackidasical expt implementation
(I assumed cpow was available).  Anyway, I think this problem is
fixed now, and that even in the no-complex-support case,
anything in CLM should be ok (I checked all the other math ops).