Match gccgo error messages.

bug121.go:12:3: error: name list not allowed in interface type
bug121.go:16:2: error: expected signature or type name

semi1.go:10:76: error: unexpected semicolon or newline before ‘{’
semi1.go:10:5: error: reference to undefined name ‘x’
semi1.go:10:8: error: reference to undefined name ‘y’
semi1.go:12:3: error: reference to undefined name ‘z’

semi2.go:10:79: error: unexpected semicolon or newline before ‘{’
semi2.go:10:9: error: reference to undefined name ‘x’

semi3.go:10:79: error: unexpected semicolon or newline before ‘{’
semi3.go:10:6: error: reference to undefined name ‘x’
semi3.go:10:9: error: reference to undefined name ‘y’
semi3.go:10:12: error: reference to undefined name ‘z’
semi3.go:12:3: error: reference to undefined name ‘z’

semi4.go:11:2: error: unexpected semicolon or newline before ‘{’
semi4.go:10:6: error: reference to undefined name ‘x’
semi4.go:12:3: error: reference to undefined name ‘z’

semi5.go:10:1: error: unexpected semicolon or newline before ‘{’

semi7.go:11:2: error: unexpected semicolon or newline before ‘else’
semi7.go:10:5: error: reference to undefined name ‘x’

slice.go:9:11: error: missing lower bound in slice expression
slice.go:9:9: error: reference to undefined name ‘y’
slice.go:9:12: error: reference to undefined name ‘z’

R=rsc
CC=golang-dev
https://golang.org/cl/201061
diff --git a/test/syntax/semi5.go b/test/syntax/semi5.go
index 0ba4df8d6..5f8ccc6 100644
--- a/test/syntax/semi5.go
+++ b/test/syntax/semi5.go
@@ -7,7 +7,7 @@
 package main
 
 func main()
-{	// ERROR "unexpected semicolon or newline before {"
+{	// ERROR "unexpected semicolon or newline before .?{.?"