libgo: update to weekly.2011-10-25

libgo/MERGE

libgo/Makefile.am

libgo/Makefile.in

libgo/go/big/int.go

libgo/go/big/int_test.go

libgo/go/big/nat.go

libgo/go/big/nat_test.go

libgo/go/big/rat.go

libgo/go/big/rat_test.go

libgo/go/crypto/x509/x509.go

libgo/go/crypto/x509/x509_test.go

libgo/go/exp/inotify/inotify_linux.go

libgo/go/exp/inotify/inotify_linux_test.go

libgo/go/exp/ssh/channel.go

libgo/go/exp/ssh/client.go

libgo/go/exp/ssh/doc.go

libgo/go/exp/ssh/messages.go

libgo/go/exp/ssh/server.go

libgo/go/exp/ssh/session.go

libgo/go/exp/ssh/transport.go