Add emacs C++ mode selection line, missing from some header files.
--- a/src/mobility/position.h Sat Jul 28 23:20:58 2007 -0700
+++ b/src/mobility/position.h Tue Jul 31 13:49:11 2007 +0100
@@ -1,3 +1,4 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
#ifndef POSITION_H
#define POSITION_H
--- a/src/mobility/random-position.h Sat Jul 28 23:20:58 2007 -0700
+++ b/src/mobility/random-position.h Tue Jul 31 13:49:11 2007 +0100
@@ -1,3 +1,4 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
#ifndef RANDOM_POSITION_H
#define RANDOM_POSITION_H
--- a/src/mobility/speed.h Sat Jul 28 23:20:58 2007 -0700
+++ b/src/mobility/speed.h Tue Jul 31 13:49:11 2007 +0100
@@ -1,3 +1,4 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
#ifndef SPEED_H
#define SPEED_H
--- a/src/mobility/static-speed-helper.h Sat Jul 28 23:20:58 2007 -0700
+++ b/src/mobility/static-speed-helper.h Tue Jul 31 13:49:11 2007 +0100
@@ -1,3 +1,4 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
#ifndef STATIC_SPEED_HELPER_H
#define STATIC_SPEED_HELPER_H