go/types: skip two failing $GOROOT/test/fixedbugs tests
go/types: skip two failing $GOROOT/test/fixedbugs tests

Change-Id: I7dfb95f34ae23c0b7905714b32068dc336a05656
Reviewed-on: https://go-review.googlesource.com/18192
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

golang/tools,cmars/tools,cmars/tools,cmars/tools,syreclabs/go-tools,golang/tools,syreclabs/go-tools,cmars/tools,golang/tools,golang/tools,golang/tools,syreclabs/go-tools,syreclabs/go-tools,syreclabs/go-tools,syreclabs/go-tools