adf_dev_driver(s): dll-export what required to add native driver (on windows).

Author: t-w

src/adf_dev_driver_nativ.h

@@ -25,7 +25,8 @@
 #define ADF_DEV_DRIVER_NATIV_H
 
 #include "adf_dev_driver.h"
+#include "adf_prefix.h"
 
-extern const struct AdfDeviceDriver adfDeviceDriverNative;
+ADF_PREFIX extern const struct  AdfDeviceDriver adfDeviceDriverNative;
 
 #endif  /* ADF_DEV_DRIVER_NATIV_H */

src/adf_dev_drivers.h

@@ -29,9 +29,9 @@
 #include "adf_err.h"
 
 
-ADF_RETCODE adfAddDeviceDriver ( const struct AdfDeviceDriver * const driver );
+ADF_PREFIX ADF_RETCODE adfAddDeviceDriver ( const struct AdfDeviceDriver * const driver );
 
-ADF_RETCODE adfRemoveDeviceDriver ( const struct AdfDeviceDriver * const driver );
+ADF_PREFIX ADF_RETCODE adfRemoveDeviceDriver ( const struct AdfDeviceDriver * const driver );
 
 void adfRemoveDeviceDrivers ( void );