nintegrate - second attempt

Maybe nintegrate should handle complex valued integrands more gracefully:

OK:

(%i2) nintegrate(x, x, 0, 1);
(%o2) 0.5

Not OK:

(%i3) nintegrate(x + %i, x, 0, 1);
(%o3) 0.5

OK, but why not 0.5 * %i?

(%i4) nintegrate(%i, x, 0, 1);
(%o4) nintegrate(%i,x,0,1)

Barton