Eliminate tests depending on non-spec Multi type.
Eliminate tests depending on non-spec Multi type.

Also, a Rakudo unfudge.

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