various updates. interim checkin.
update for loops to assign length once
ensure path svg elements are written before overlays in parent svg
added getBounds to segments
flowchart connector refactor
flowchart connector editors take connector offset into account
connector padding updates
temporarily comment out all connections except one
fixes to the vml arc renderer
updates to svg painting to do padding properly
- removed some unnecessary code
- added 'segment' to arc segment (the trigonometric segment for the angle between start and end points)
- updated overlays to split compute phase from paint
code cleanup
updated connection painting to handle extents properly.  split 'compute' from 'paint' when drawing overlays.
moved previous versions into the archive dir
removed canvas from build
- removed canvas option from demos
- added link to google group to demos
removed canvas event bind stuff
more code tightening for the connection paint
- resetBounds is done by the superclass now
- code cleanup
code cleanup