Commit Briefs
devdraw: add forcedpi toggled by Fn+F3 on Mac
R=rsc http://codereview.appspot.com/6846104
devdraw, libdraw: add display->dpi
Fixed at 100 right now, but the plan is to make it accurate and then use it. R=rsc http://codereview.appspot.com/6856091
devdraw: do not interpret alt-tab as alt for compose
R=rsc CC=plan9port.codebot http://codereview.appspot.com/5132050