Base: Change root user home directory from / to /root

Author: https://github.com/bcoles
Commit: https://github.com/SerenityOS/serenity/commit/e8b17c42bbb
Pull-request: https://github.com/SerenityOS/serenity/pull/1548

Base/etc/passwd

@@ -1,4 +1,4 @@
-root:x:0:0:root:/:/bin/sh
+root:x:0:0:root:/root:/bin/sh
 lookup:x:10:10:LookupServer,,,:/:/bin/false
 protocol:x:11:11:ProtocolServer,,,:/:/bin/false
 notify:x:12:12:NotificationServer,,,:/:/bin/false

Kernel/build-root-filesystem.sh

@@ -92,12 +92,15 @@ chown $window_uid:$window_gid mnt/etc/WindowServer/WindowServer.ini
 echo "done"
 
 printf "installing users... "
+mkdir -p mnt/root
 mkdir -p mnt/home/anon
 mkdir -p mnt/home/nona
 cp ../ReadMe.md mnt/home/anon/
 cp -r ../Libraries/LibJS/Tests mnt/home/anon/js-tests
+chmod 700 mnt/root
 chmod 700 mnt/home/anon
 chmod 700 mnt/home/nona
+chown -R 0:0 mnt/root
 chown -R 100:100 mnt/home/anon
 chown -R 200:200 mnt/home/nona
 echo "done"