Change complex number val() tests.
Change complex number val() tests.

On second thought, it seems that stacking signs like was being tested
isn't all that useful, so the tests in question have been changed to
testing a different kind of complex number (one using Inf in the
imaginary part).

skids/roast,cygx/roast,b2gills/roast,zostay/roast,cygx/roast,perl6/roast,dogbert17/roast,skids/roast,bitrauser/roast,b2gills/roast,dankogai/roast,dogbert17/roast,zostay/roast,zostay/roast,b2gills/roast,cygx/roast,skids/roast,dankogai/roast,dankogai/roast,bitrauser/roast