Recognize gccgo error messages.
Recognize gccgo error messages.

rename1.go:10:8: error: expected type
rename1.go:11:10: error: expected function
rename1.go:13:8: error: incompatible types in binary expression

R=rsc
http://go/go-review/1015013

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