make hg mail more forgiving: create CL first, even if gofmt is needed or no reviewers listed.
make hg mail more forgiving:
create CL first, even if gofmt is needed
or no reviewers listed.

R=r
http://go/go-review/1025025

gnanderson/go,pombredanne/go-deleteme,dsriram/golang,apparentlymart/golang,gnanderson/go,tianon/debian-golang,tianon/debian-golang,nightlyone/golang,apparentlymart/golang,bdwalton/debian-golang,tv42/old-go,pombredanne/go-deleteme,gnanderson/go,apparentlymart/golang,pombredanne/go-deleteme,tianon/debian-golang,nightlyone/golang,gnanderson/go,ssrl/go,h8liu/golang,bdwalton/debian-golang,ssrl/go,tianon/debian-golang,nightlyone/golang,tianon/debian-golang,tv42/old-go,pombredanne/go-deleteme,h8liu/golang,nightlyone/golang,gnanderson/go,nightlyone/golang,tv42/old-go,h8liu/golang,h8liu/golang,gnanderson/go,apparentlymart/golang,dsriram/golang,tianon/debian-golang,pombredanne/go-deleteme,ssrl/go,ssrl/go,bdwalton/debian-golang,bdwalton/debian-golang,ssrl/go,dsriram/golang,dsriram/golang,tianon/debian-golang,h8liu/golang,tv42/old-go,pombredanne/go-deleteme,tianon/debian-golang,gnanderson/go,bdwalton/debian-golang,bdwalton/debian-golang,h8liu/golang,nightlyone/golang,h8liu/golang,dsriram/golang,ssrl/go,tv42/old-go,tv42/old-go,tv42/old-go,bdwalton/debian-golang,ssrl/go,bdwalton/debian-golang,apparentlymart/golang,pombredanne/go-deleteme,apparentlymart/golang,dsriram/golang,nightlyone/golang,dsriram/golang,apparentlymart/golang