UFS: fix which ufs we use.

It's time to move to the one in Harvey-OS.

This is tested and working for supporting harvey guests.

I have a feeling I have the commands not quite right, but OTOH
they work.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>

bootstrap.sh

@@ -4,7 +4,8 @@ git submodule init
 git submodule update
 echo Building the build tool...
 GOBIN="$(pwd)/util" GOPATH="$(pwd)/util/third_party:$(pwd)/util" go get -d harvey/cmd/... # should really vendor these bits
-GOBIN="$(pwd)/util" GOPATH="$(pwd)/util/third_party:$(pwd)/util" go install github.com/rminnich/ninep/srv/examples/ufs harvey/cmd/...
+GOBIN="$(pwd)/util" GOPATH="$(pwd)/util/third_party:$(pwd)/util" go get github.com/Harvey-OS/ninep/cmd/ufs harvey/cmd/...
+GOBIN="$(pwd)/util" GOPATH="$(pwd)/util/third_party:$(pwd)/util" go install github.com/Harvey-OS/ninep/cmd/ufs harvey/cmd/...
 
 echo Downloading the blaze tool...
 curl -L http://sevki.co/get-build -o util/blaze