Changeset 61e5d99 for Jenkins/FullBuild

Boxing no longer passes layout information about polymorphic types in the signature of the function. This simplifies the sub-passes in the box pass that added the arguments to the calls, the parameters to the declarations, and used the information internally. The effects in functions are less well quantified, because there are cases were the information has to be generated instead of passed in, but it is also never passed in (or generated) when not needed at all.