Removes the time-stamp from the comment header.

This patch removes the time-stamp from the comment header in every file.
Maintaining those time-stamp is just painful when merging and rebasing
while nobody uses it nor updates it. So we remove them once and for all
since they are burdensome as they are purposeless.
Fixes a typo.

This fixes a typo in the comment header of the generic atoi unit file.
Adds support to inject the frame through UART.

This patch adds suport to write the frame to UART and send it to a
firmware.
Adds license information.

This adds the COPYING file which contains the GNU GPLv3 license.