Move deps from _workspace/ to vendor/

godep restore
pushd $GOPATH/src/github.com/appc/spec
git co master
popd
go get go4.org/errorutil
rm -rf Godeps
godep save ./...
git add vendor
git add -f $(git ls-files --other vendor/)
git co -- Godeps/LICENSES Godeps/.license_file_state Godeps/OWNERS

vendor/github.com/rackspace/gophercloud/pagination/null.go

@@ -0,0 +1,20 @@
+package pagination
+
+// nullPage is an always-empty page that trivially satisfies all Page interfacts.
+// It's useful to be returned along with an error.
+type nullPage struct{}
+
+// NextPageURL always returns "" to indicate that there are no more pages to return.
+func (p nullPage) NextPageURL() (string, error) {
+	return "", nil
+}
+
+// IsEmpty always returns true to prevent iteration over nullPages.
+func (p nullPage) IsEmpty() (bool, error) {
+	return true, nil
+}
+
+// LastMark always returns "" because the nullPage contains no items to have a mark.
+func (p nullPage) LastMark() (string, error) {
+	return "", nil
+}