add copyright headers, fix a few things
-rw-r--r-- 11358 LICENSE
-rw-r--r-- 1614 README
-rwxr-xr-x 5858 btrbk-run
-rw-r--r-- 2242 check-subvol-stale
-rwxr-xr-x 1884 desktop-20-autostart.sh
-rwxr-xr-x 28469 distro-begin
-rwxr-xr-x 31151 distro-end
-rwxr-xr-x 909 dsremote
-rwxr-xr-x 5062 input-setup
-rwxr-xr-x 1115 install-btrfs-sync-tools
-rwxr-xr-x 1404 keyscript-off
-rwxr-xr-x 1526 keyscript-on
-rwxr-xr-x 6967 mail-setup
-rwxr-xr-x 1078 mount-latest-remote
-rw-r--r-- 5546 mount-latest-subvol
-rwxr-xr-x 914 myoff
-rwxr-xr-x 10709 phabricator-setup
-rwxr-xr-x 775 rootsshsync
-rwxr-xr-x 1305 ssh-emacs-setup