Commit Briefs
devdraw: fix retina mode
R=rsc http://codereview.appspot.com/6847104
libdraw: add scalesize
R=rsc http://codereview.appspot.com/6855092
draw.h: add DefaultDPI
R=rsc http://codereview.appspot.com/6858071
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: restore compilation on OS X 10.6
Also add some ignored files to .hgignore R=rsc http://codereview.appspot.com/6842089
acme: use threadspawnd to avoid changing "." of current process
R=rsc http://codereview.appspot.com/6736060
libthread: add threadspawnd
R=rsc http://codereview.appspot.com/6742064
acme: add $acmeshell to control execution shell
R=rsc CC=plan9port.codebot http://codereview.appspot.com/6614056
fontsrv: x11 support
R=rsc, 0intro CC=plan9port.codebot http://codereview.appspot.com/6739047
plumb.app: accept plumb:foo as alias for foo
R=rsc CC=plan9port.codebot http://codereview.appspot.com/5495046
devdraw: map X11 dead_diaresis to double quote
R=rsc CC=plan9port.codebot http://codereview.appspot.com/6690049
libmemdraw: fix int size bug
R=rsc, quanstro CC=plan9port.codebot http://codereview.appspot.com/6657043
silence more warnings
R=rsc http://codereview.appspot.com/6744056
9c: support clang on Mac
R=rsc http://codereview.appspot.com/6744055
fix clang warnings reported by Tuncer Ayaz
R=rsc http://codereview.appspot.com/6744054