Various updates, start including rpiConfigServer

* Provide shell script to copy in external dependencies
* Install Python 3 and build-essential
* Install OpenCV libraries including Python 3 bindings
* Install rpiConfigServer as service
* Improve service scripts with exec, netconsoleServer
* Don't include JDK debug info (shrinks zip size a lot)
* Include libraries, headers, and jars for wpiutil, cscore, ntcore

stage2/02-net-tweaks/01-run.sh

@@ -10,7 +10,7 @@ on_chroot << EOF
 rm -f /etc/resolv.conf
 touch /tmp/dhcpcd.resolv.conf
 ln -s /tmp/dhcpcd.resolve.conf /etc/resolv.conf
-sed -i -e 's/\/run\//\/var\/run\//' /etc/systemd/system/dhcpcd5.control
+sed -i -e 's/\/run\//\/var\/run\//' /etc/systemd/system/dhcpcd5.service
 mv /etc/dhcpcd.conf /boot/
 chown root:root /boot/dhcpcd.conf
 ln -s /boot/dhcpcd.conf /etc/dhcpcd.conf