Add namespace around all files

src/util/coordinate_calculation.cpp

@@ -11,6 +11,11 @@
 
 #include <limits>
 
+namespace osrm
+{
+namespace util
+{
+
 namespace
 {
 constexpr static const double RAD = 0.017453292519943295769236907684886;
@@ -223,3 +228,5 @@ double bearing(const FixedPointCoordinate &first_coordinate,
     return result;
 }
 }
+}
+}