Don't accidentally include the ftdi.h from libftdi (as opposed to libftdi1).

Index: test/baudrate.cpp
--- test/baudrate.cpp.orig
+++ test/baudrate.cpp
@@ -12,7 +12,7 @@
  *                                                                         *
  ***************************************************************************/
 
-#include <ftdi.h>
+#include "../src/ftdi.h"
 
 #define BOOST_TEST_DYN_LINK
 #include <boost/test/unit_test.hpp>