.hgignore: Ignore all goinstalled packages

R=golang-dev, niemeyer, rsc1, rog, rsc
CC=golang-dev
https://golang.org/cl/4285047

.hgignore

@@ -49,8 +49,7 @@ src/pkg/runtime/runtime_defs.go
 src/pkg/runtime/version.go
 src/pkg/runtime/version_*.go
 src/pkg/unicode/maketables
-src/pkg/github.com/
-src/pkg/*.googlecode.com/
+src/pkg/*.*/
 test/pass.out
 test/run.out
 test/times.out