Update shell_utils

* Add copy_metadata for copying files and including their metadata - sometimes
useful for copying individual files into a mounted image without using rsync.
* Remove out of date install lines from prepare_rPI.sh

shell_utils/copy_metadata.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+# Filename: cp-metadata
+
+myecho=echo
+src_path="$1"
+dst_path="$2"
+
+find "$src_path" |
+  while read src_file; do
+    dst_file="$dst_path${src_file#$src_path}"
+    $myecho chmod --reference="$src_file" "$dst_file"
+    $myecho chown --reference="$src_file" "$dst_file"
+    $myecho touch --reference="$src_file" "$dst_file"
+  done

shell_utils/prepare_rPI.sh

@@ -3,15 +3,9 @@
 # change locales to en_US.UTF-8
 dpkg-reconfigure locales
 
-sed -i "s/wheezy/jessie/" /etc/apt/sources.list
 apt-get update
 apt-get dist-upgrade
 apt-get autoremove
-apt-get install libreoffice p7zip-full libfontforge1 timidity freepats pmount
-dpkg -i pdf2htmlex*.deb
-
-# Disable swap
-dphys-swapfile uninstall
 
 # enable rc.local
 systemctl enable rc-local.service