libgo: Update to weekly.2011-11-18.
R=iant
CC=gofrontend-dev
https://golang.org/cl/5488050
diff --git a/libgo/go/syscall/syscall.go b/libgo/go/syscall/syscall.go
index a802ba0..ad9df6c 100644
--- a/libgo/go/syscall/syscall.go
+++ b/libgo/go/syscall/syscall.go
@@ -9,8 +9,9 @@
// packages rather than this one if you can.
// For details of the functions and data types in this package consult
// the manuals for the appropriate operating system.
-// These calls return errno == 0 to indicate success; otherwise
-// errno is an operating system error number describing the failure.
+// These calls return err == nil to indicate success; otherwise
+// err is an operating system error describing the failure.
+// On most systems, that error has type syscall.Errno.
package syscall
import "unsafe"
