Stanag 4607: rename protocol abbreviation from 4607 to s4607 to avoid any collision with a frame number

Bug: 10509
Change-Id: I6b97c979ed05378a7d3495fe455bc36b82b19cc9
Reviewed-on: https://code.wireshark.org/review/4338
Reviewed-by: Michael Mann <mmann78@netscape.net>
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
(cherry picked from commit fdf3585c46fc24b3c6551ad658b765ff435955c8)
Reviewed-on: https://code.wireshark.org/review/4351