Add option for setting preferred pointer or reference type declaration style

Currently, when e.g. autocompleting a method signature, say void Foo::bar(const Baz& b), QtC always puts the pointer or reference "tag" next to the variable name. That is, that declaration would be autocompleted as void Foo::bar(const Baz &b). IIRC this is correct Qt style, but for those of us who think that, semantically, the pointer or reference tag is part of the type and not the variable name, it would be nice to autocomplete it (and other cases) instead with the tag next to the type, separated from the variable name by a space.