The bugdoc has a section large enough that it is split across 4 pages.
The section is inside a nested table. First we lay this out properly,
but when later laying out the footer we need to redo the body frame
layout, which first undoes the split of the table/nested table/section.

This fails, the master second and its 3 follows are expected to be moved
back to the first page (and merged together), but
SwSectionFrame::MakeAll() did this only for the first follow, which was
moved to the first page, not for the other 2 follows which were on other
pages.

Fix the problem by merging not only follows which are also next to the
section frame, but also the ones which are follows (but not nexts).

Change-Id: I7a69aa58336a50d4f37808ccb105b443c2f6993c