Adding GPG signing as recommended by man 8 pacman-key; SSH-agent improvements

EtcFiles/shadowarch

@@ -311,11 +311,12 @@ fi
 
 # Set hostname
 header Set hostname
-printf "What is your hostname? AniNIX::"
+printf "What is your fully-qualified hostname? (i.e. core.aninix.net) "
 read hostname
 echo "$hostname" > /mnt/etc/hostname
+hostname "$hostname"
 
-header Installed ShadowArch\! 
+header Installed ShadowArch on AniNIX::`hostname -s`\! 
 if [ ! -z "$nodiskbuild" ]; then
     header Remember to run grub-install and set up your bootloader.
     echo 'https://wiki.archlinux.org/index.php/Installation_guide#Boot_loader'