tap-iousers: fix indent and add modelines info

Change-Id: Ia144e016bd7fb0b8d4770d45afa1145057d0a5e9
Reviewed-on: https://code.wireshark.org/review/3646
Reviewed-by: Evan Huus <eapache@gmail.com>
OUI: Fix indent (use 4spaces) and modelines info

Use the same indent like epan/oui.h

Change-Id: I02018788bc3f62d170a87a40bd4495630bded1c5
Reviewed-on: https://code.wireshark.org/review/3647
Reviewed-by: Evan Huus <eapache@gmail.com>
LINK16: Add modelines info

Change-Id: I4267de691f9b7064b6110eba1c85ddb6b755d3f5
Reviewed-on: https://code.wireshark.org/review/3648
Reviewed-by: Evan Huus <eapache@gmail.com>