clean-dependencies: Documented clean-dependencies

The script is not used in build-scripts, but can be convenient when
building locally or tinkering around. Since the amount of scripts in
build-scripts is already overwhelming, I decided to move it to
user-scripts.

Ticket: ENT-12600
Signed-off-by: Lars Erik Wik <lars.erik.wik@northern.tech>

Author: larsewi

build-scripts/clean-dependencies

@@ -0,0 +1,5 @@
+# User Scripts
+
+This is a collection of scripts for your convenience. They are not part of build
+scripts, but can be useful when building locally or when you're tinkering
+around.

user-scripts/README.md

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# This script removes previously compiled dependencies which are later packaged
+# into CFEngine. When you want to do a fresh build it can be nice to remove
+# them in advance.
+
+. "$(dirname "$0")"/../build-scripts/functions
+. "$(dirname "$0")"/../build-scripts/detect-environment
+. "$(dirname "$0")"/../build-scripts/compile-options
+
+set -ex
+for dep in $DEPS
+do
+    rm -rf "$dep"
+done