from pd-l2ork: 96e2fa5605a2d87ab99c5c2c8df9bca53c23c401

 by Gilberto"
from pd-l2ork: 50719c4c455291be3ac679486f7e4d72706bd9e4

*proxy paste function to incorporate force getscroll to ensure that scroll is being checked after a paste

Protection against closing dirty abstractions
closing and quitting doesn't query if everyone is clean
(but "pd perf" message turns that protection back on for performances)
ctrl-1, etc, automatically place new object under a selected one and
connect to it
return when editing an object (not a message or comment) deactivates text

multiple selection.  Fixed 2-pixel growth problem on Mac.
Made a "version" message so Pd can detect future file formats
if they ever appear.