make room after package declaration for $VERSION, now being inserted by latest [PkgVersion]
more fixes to Moose::Manual::Exceptions::Manifest

now that the file is known to dzil in the early phases, we don't need to call
into SurgicalPodWeaver ourselves, but by the time it munges this file, we
haven't yet added our content -- so we need to insert that later, using a
bit of placeholder pod as a guide.