[PATCH 21.5] Union type fixes

[Jerry James]

I wrote:
> I just wanted to let other developers know that bignums are broken with
> GCC 4.X + optimization, period.

When using union type, I meant.  Non-union type builds are not affected
by this bug, which the gcc team just informed me does not exist on the
gcc mainline.  When we'll get a released gcc with the fix is another
question, of course.
-- 
Jerry James, Assistant Professor        james at xemacs.org
Computer Science Department             http://www.cs.usu.edu/~jerry/
Utah State University