HSAIL: fix some assert logic in the argument-gathering code that shows up in non-product builds Contributed-by: Tom Deneau <tom.deneau@amd.com> Summary: * computes parameter_count based on signature and uses that and parameter_index (set by the SignatureIterator) to tell if we are on the last parameter, which requires special handling whether it is an int or an object. * if signature says last parameter is an Object, checks that the real passed in parameter is an Object Array, but for non last-parameters, lets objects go thru. * if signature says last parameter is an int, nothing is pushed (no change to this logic)