undo CL 4675045 / 0e11e08951f7
undo CL 4675045 / 0e11e08951f7

Breaks Mercurial 1.8.3.

??? original CL description
codereview: fix for Mercurial 1.9

Fixes issue 2038.

R=rsc, bobbypowers
CC=golang-dev
http://codereview.appspot.com/4675045
???

R=golang-dev, rsc
CC=golang-dev
http://codereview.appspot.com/4685055

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