Move poly1305_get_tag() into poly1305.c, hide poly1305_init().
[tinc] / .ci / package /
drwxr-xr-x   ..
-rwxr-xr-x 487 build.sh
drwxr-xr-x - deb
drwxr-xr-x - rpm
drwxr-xr-x - win