Add downloader for KDE agreement

KDE presents this as a series of png files on their site, which is less
convenient that assembling that into a PDF.  But we don't have
permission to distribute an assembled PDF, so instead we have a script
that lets a user take the png files and make their own PDF.

bin/dosh

+#!/usr/bin/env bash
+
+SCRIPTNAME=dosh
+BASEDIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )/..
+
+# Call the upstream dosh
+watch(){ ${OTS_DOCTOOLS_DIR}/dosh ${FUNCNAME[0]}; }
+
+_dload(){
+	if [ -f "$2" ]; then
+		return
+	fi
+	wget -O $2 $1
+}
+
+docs_kde() {
+	mkdir -p $BASEDIR/doc/kde/.cache
+	cd $BASEDIR/doc/kde/.cache
+
+	# Don't download if it already exists
+	if [ -f  ../kdefreeqt.pdf ]; then
+		return
+	fi
+
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt0.png kdefreeqt0.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt1.png kdefreeqt1.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt2.png kdefreeqt2.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt3.png kdefreeqt3.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt4.png kdefreeqt4.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt5.png kdefreeqt5.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt6.png kdefreeqt6.png
+	_dload https://kde.org/community/whatiskde/images/kdefreeqt7.png kdefreeqt7.png
+	convert kdefreeqt*.png ../kdefreeqt.pdf
+}
+
+docs() {
+	docs_kde
+}
+
+"$@" # <- execute the task
+[ "$#" -gt 0 ] || printf "Usage:\n\t./${SCRIPTNAME} %s\n" "($(compgen -A function | grep '^[^_]' | paste -sd '|' -))"

doc/Makefile

+all:
+	@../bin/dosh docs
+
+clean-cache:
+	@echo rm -rf kde/.cache
+
+clean: clean-cache
+	rm -rf kde/kdefreeqt.pdf