AP_Vehicle: added defines for main vehicle types

libraries/AP_Vehicle/AP_Vehicle.h

@@ -19,6 +19,8 @@
   parameters needed by multiple libraries
  */
 
+#include <AP_Param.h>
+
 class AP_Vehicle {
 
 public:
@@ -44,4 +46,16 @@ public:
     };
 };
 
+/*
+  define common vehicle build types. Note that the APM_BUILD_DIRECTORY
+  define is only available with makefile based build, not with
+  arduino.
+  Also note that code needs to support other APM_BUILD_DIRECTORY
+  values for example sketches
+ */
+#define APM_BUILD_APMrover2      1
+#define APM_BUILD_ArduCopter     2
+#define APM_BUILD_ArduPlane      3
+#define APM_BUILD_AntennaTracker 4
+
 #endif // AP_VEHICLE_H