disparate duplicate subproto handling in protover

protover.c treats Link=1 Link=1 and Link=1 identically, allowing duplicate entries without complaint, though it does explicitly check for duplicates to avoid double-counting it as two votes for the same version.

protover.c also treats Link=1 Link=2 and Link=1-2 the same, while the rust implementation of protover treats Link=1 Link=2 as if it were Link=2.

Trac:
Username: cyberpunks