asksign bug: integrate(exp(a*x),x,0,inf);

This is a newer bug (built Maxima from the current source).  Two bugs: (i) the question about the sign
of a is asked twice, and (ii) Maxima returns a nounform for the definite integral.

(%i3) integrate(exp(a*x),x,0,inf);

Is a positive, negative or zero?

neg;

Is a positive, negative or zero?

neg;

(%o3) 'integrate(%e^(a*x),x,0,inf)

(%i6) build_info();

(%o6) build_info("branch_5_30_base_98_g29f9239_dirty","2013-06-01 05:06:53",
                   "i686-pc-cygwin","Clozure Common Lisp",
                   "Version 1.9-r15764  (WindowsX8632)")
(%i7)

--Barton