note that sortmain.go has been run through hg gofmt;
only the formatting of the day initializers changed.
i'm happy to revert that formatting if you'd prefer.
stop on error in doc/progs/run
R=r
CC=golang-dev
https://golang.org/cl/850041
fixedbugs/bug012.go is broken again but i left it where it is, with
the golden file not reflecting the breakage so it will be noticed
R=ken,gri
OCL=14073
CL=14073