Ignore scroll/noscroll window setting. Instead, scroll when the write begins in or immediately after the displayed window content. In the new scrolling discipline, executing "Noscroll" is replaced by typing Page Up or using the mouse to scroll higher in the buffer, and executing "Scroll" is replaced by typing End or using the mouse to scroll to the bottom of the buffer. R=r, r2 http://codereview.appspot.com/4433060

R=rsc http://codereview.appspot.com/2476042

R=rsc http://codereview.appspot.com/2162042

Also just drop \r from output. It's a losing battle to keep turning it off. R=rsc http://codereview.appspot.com/2128042

R=rsc CC=codebot http://codereview.appspot.com/643041

- don't exit from a "child" note unless rc exited (code copied from 9term.c) - ignore writes to the tag; specifically " Send Noscroll" at startup. R=rsc CC=codebot http://codereview.appspot.com/181115