Remove all ftp mirrors
Default to en_US.utf8

Default to en_US.utf8 if what is set in lang.sh is only just en_US.
Should help to set the default to en_US.utf8 in the installer.
Default to Etc/UTC if no other default is set

When no default is set (like in the installer) set the default value to
Etc/UTC.
Check for root privileges after checking command line options

So that --help works without having to get root privileges first.