Fixing the imaginary/complex mess

[Andrei Alexandrescu]

Georg Wrede wrote:
> Walter, could the error message then include "Please use z.re or z.im to 
> get the parts, instead of a cast." or something. Otherwise we have to 
> explain to all users separately what's going on, /and/ that the omission 
> of implementing the cast in D isn't an omission.

If we cut the limb, why first apply an ointment to it?

Andrei