operation, not just one object at a time
- vector reference counting is not needed now that we have recursive delete.
Removed it.
- completed recursive delete of vectors
- gridify: give new vectors a minimum length, so that we don't get a weird
display when starting a new footprint.
git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5391 99fdad57-331a-0410-800a-d7fa5415bdb3