Commit Briefs
libmach: fix warning about preadn
R=rsc http://codereview.appspot.com/2388041
libmach: more mach-o support
R=rsc http://codereview.appspot.com/2277041
R=rsc http://codereview.appspot.com/2388041
R=rsc http://codereview.appspot.com/2277041