Patch: FYI: Math/StrictMath merge

[Andrew Haley]

Tom Tromey writes:
 > Hans> Could someone explain why this is a good idea?  It seems to
 > Hans> replace one multiplication by two, and it introduces additional
 > Hans> overflow possibilities.
 > 
 > Hans> I'd be willing to accept both if it improves accuracy.  What's
 > Hans> the argument that it does?
 > 
 > Thanks for bringing this up.  I'll find out.

It will be more accurate on x86, but it shouldn't be.

Andrew.