codereview: do not send mail when submitting for others
codereview: do not send mail when submitting for others

rename original_author to copied_from so that it reads
better when used as a condition.

R=r
CC=golang-dev
http://codereview.appspot.com/185045

Triskite/willstone-goclone,d0f/go-zh,glycerine/jeaten-go-arrayof-structof,npe9/noahevans-go9,d0f/go-zh,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,sanjosh/sanjos100-tipc,mhennings/marcohennings-go,webfd/go-zh,bryanxu/go-zh,bryanxu/go-zh,d0f/go-zh,mhennings/marcohennings-go,bryanxu/go-zh,Triskite/willstone-goclone,rflanagan/reginaldflanagan-project1,npe9/noahevans-go9,d0f/go-zh,bryanxu/go-zh,sanjosh/sanjos100-tipc,rdp/rogerpack2005-golang,npe9/noahevans-go9,mhennings/marcohennings-go,d0f/go-zh,d0f/go-zh,npe9/noahevans-go9,Triskite/willstone-goclone,mhennings/marcohennings-go,rdp/rogerpack2005-golang,rflanagan/reginaldflanagan-project1,sanjosh/sanjos100-tipc,rflanagan/reginaldflanagan-project1,scirelli/scirelli-go,webfd/go-zh,glycerine/jeaten-go-arrayof-structof,scirelli/scirelli-go,mhennings/marcohennings-go,npe9/noahevans-go9,scirelli/scirelli-go,scirelli/scirelli-go,glycerine/jeaten-go-arrayof-structof,scirelli/scirelli-go,rdp/rogerpack2005-golang,npe9/noahevans-go9,sanjosh/sanjos100-tipc,rflanagan/reginaldflanagan-project1,glycerine/jeaten-go-arrayof-structof,glycerine/jeaten-go-arrayof-structof,rflanagan/reginaldflanagan-project1,Triskite/willstone-goclone,rflanagan/reginaldflanagan-project1,sanjosh/sanjos100-tipc,scirelli/scirelli-go,webfd/go-zh,rdp/rogerpack2005-golang,rflanagan/reginaldflanagan-project1,webfd/go-zh,Triskite/willstone-goclone,bryanxu/go-zh,glycerine/jeaten-go-arrayof-structof,mhennings/marcohennings-go,rdp/rogerpack2005-golang,rdp/rogerpack2005-golang,webfd/go-zh,Triskite/willstone-goclone,d0f/go-zh,glycerine/jeaten-go-arrayof-structof,Triskite/willstone-goclone,webfd/go-zh,bryanxu/go-zh,mhennings/marcohennings-go,webfd/go-zh,sanjosh/sanjos100-tipc,webfd/go-zh,rdp/rogerpack2005-golang,mhennings/marcohennings-go,rflanagan/reginaldflanagan-project1,Triskite/willstone-goclone,bryanxu/go-zh,scirelli/scirelli-go,scirelli/scirelli-go,sanjosh/sanjos100-tipc,bryanxu/go-zh,rdp/rogerpack2005-golang,npe9/noahevans-go9,npe9/noahevans-go9,sanjosh/sanjos100-tipc