Move scripts back to hack/, leave docs in project/

This also removes the now-defunct `*maintainer*.sh` scripts that don't work with the new TOML format, and moves a couple not-build-or-release-related scripts to `contrib/` instead.

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Upstream-commit: 949a21b55f3b8d7d1ae7a7b9829111a8f0dbf7e2
Component: engine

components/engine/hack/make/.ensure-httpserver

@@ -0,0 +1,15 @@
+#!/bin/bash
+set -e
+
+# Build a Go static web server on top of busybox image
+# and compile it for target daemon
+
+dir="$DEST/httpserver"
+mkdir -p "$dir"
+(
+	cd "$dir"
+	GOOS=linux GOARCH=amd64 go build -o httpserver github.com/docker/docker/contrib/httpserver
+	cp ../../../../contrib/httpserver/Dockerfile .
+	docker build -qt httpserver . > /dev/null
+)
+rm -rf "$dir"