fmt: decrease recursion depth
fmt: decrease recursion depth

This permits the test to run when using gccgo on system
without split-stack support.  See
http://gcc.gnu.org/ml/gcc-patches/2011-04/msg01420.html
http://gcc.gnu.org/PR48553

R=r
CC=golang-dev
http://codereview.appspot.com/4440062

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