http: correct path to serve index.html. calling filepath.FromSlash(x) make invalid character to serve file. Fixes issue 2128
http: correct path to serve index.html.
calling filepath.FromSlash(x) make invalid character to serve file.
Fixes issue 2128

R=golang-dev, alex.brainman, rsc
CC=golang-dev
http://codereview.appspot.com/4810064

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

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