R=rsc http://codereview.appspot.com/163046

R=rsc_swtch, rsc CC=old.codebot, codebot http://codereview.appspot.com/132045

http://bitbucket.org/rsc/plan9port/issue/38/ This patch tries to make 9pserve work again with 9P2000 clients, in case the server handled by 9pserve expects 9P2000.u. (Since changeset http://bitbucket.org/rsc/plan9port/changeset/d9843471f0bc/ servers using srv() stop communicating after they received a 9P2000 msg that has a different .u definition.) Tattach, Tauth and Tcreate 9P2000 messages will be translated now, if neccessary, to 9P2000.u by growing them to the new size, and providing the missing (default) values. The code of the first two message types has been tested with drawterm on linux (dialing factotum), and mounts from within 9vx to plan9port's factotum and dossrv. The code for Tcreate couldn't be tested due to lack of file servers both speaking 9P2000.u and allowing file creation. R=rsc_swtch, rsc CC=codebot http://codereview.appspot.com/151052

R=rsc CC=codebot http://codereview.appspot.com/161048

R=rsc,codebot APPROVED=rsc http://codereview.appspot.com/142041

Can test with cd $PLAN9/src/cmd/devdraw mk devdraw-cocoa DEVDRAW=devdraw-cocoa colors

message http://codereview.appspot.com/123051

http://codereview.appspot.com/123050

http://codereview.appspot.com/116119

http://codereview.appspot.com/95076

fixes http://groups.google.com/group/plan9port-dev/t/f865adc9a520653a see also http://archive.netbsd.se/?ml=plan9-9fans&a=2007-03&t=3328886 http://codereview.appspot.com/117072

http://codereview.appspot.com/105061

http://codereview.appspot.com/117065