This script builds the client by cloning the repository to a temporary
location and building from there by temporarily changing GOPATH.
However, it was previously building by package name, and a package with
the same name in GOROOT overrides. This update changes the current
directory, and builds from there, instead of specifying a package name.
Signed-off-by: John Stephens <johnstep@docker.com>
Upstream-commit: eab0f58661640d4309765755944dc26871f7bb59
Component: engine
58d623b06c