The data/keymaps.csv file is taken from the latest SPICE-GTK
repository. All contributions from this original file in both
SPICE-GTK and GTK-VNC repos were made under Red Hat copyright.
Red Hat grants permission to relicense to dual GPL2 or 3-clause
BSD.

The data/keymap-gen tool is a brand new file.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>