Fix upgrade issue

The upgrade script was not taking account of the new /usr/local location.

Move shadow file

Minor tweak to ensure shadow file is in the data dir.

Ensure root password not reset on update

This is a small tweak that links the shadow file to the GaleForce data directory, rather than simply copying over, to ensure the password isn't reset to changeme.

Use /usr/local to install GaleForce

This release changes the install method:

• During the recovery image install, we now setup GaleForce in /usr/local/galeforce
• After the install, minimal changes are made to the new root partition (including copying and linking some config)
• The same changes are re-applied whenever an official automatic update is made

Finally, all busybox commands are now linked to /usr/local/bin, so they're ready to use out of the box.

Initial release

This is the first beta release of GaleForce for the Google Wifi router. It enables SSH access and contains the following:

• BusyBox v1.26.2 (2017-01-11 08:43:16 UTC)
• Dropbear v2017.75