Recognize gccgo error messages.  This uses GCCGO_ERROR, which is recognized by the gccgo testsuite but is ignored by the errchk script used with 6g.
Recognize gccgo error messages.  This uses GCCGO_ERROR, which
is recognized by the gccgo testsuite but is ignored by the
errchk script used with 6g.

method1.go:7:1: error: redefinition of 'M': parameter types changed
method1.go:6:1: note: previous definition of 'M' was here
method1.go:10:1: error: redefinition of 'f': parameter types changed
method1.go:9:1: note: previous definition of 'f' was here
method1.go:13:1: error: redefinition of 'g': parameter names changed
method1.go:12:1: note: previous definition of 'g' was here

R=rsc
DELTA=5  (0 added, 0 deleted, 5 changed)
OCL=18962
CL=19058

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