suite_aggrs now handling struct by value return types, also still missing: nesting, unions, arrays note: this doesn't compile against this same checked in revision of dyncall, but only my working copy; a future checkin will catch up

suite_aggrs for dyncall written in C and Lua.

Tests aggregates (structs, unions and arrays) passed by value, along with other, non-aggregate args.

@@@ unions and arrays missing