codereview: fix upload of hg copied file
codereview: fix upload of hg copied file

Fixes issue 1134.

R=r, r2
CC=golang-dev
http://codereview.appspot.com/2264043

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