Problem: so far, these names have not been conveyed.
But after the net IDs changed in the LVS DB (renumbering),
the names should be retained. Otherwise it is difficult to
relate log level entries or Spice netlists to them.
* Fixed issue-1011 by using single-point polygons for texts in deep mode. Tests need fixing.
* Updated tests (text become a single point)
* Added test for issue-1011
Sometimes, shapes from child cells were propagated into
parent cells in the L2N and LVSDB output.
Because of this fix, many testdata files have to be updated.