exp/template/html: defines a parse context for a subset of HTML.
exp/template/html: defines a parse context for a subset of HTML.

This defines just enough context to distinguish HTML URI attributes
from parsed character data.

It does not affect any public module API as I thought I would get
early comment on style for defining enumerations and tables.

R=rsc, r, nigeltao, r
CC=golang-dev
http://codereview.appspot.com/4906043

Committer: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>

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