change #include "jtag.h" to <jtag/jtag.h>

Changes from the flat namespace to heirarchical one.  Instead of writing:

	#include "jtag.h"

the following form should be used.

	#include <jtag/jtag.h>

The exception is from .c files in the same directory.

src/pld/virtex2.h

@@ -20,7 +20,7 @@
 #ifndef VIRTEX2_H
 #define VIRTEX2_H
 
-#include "jtag.h"
+#include <jtag/jtag.h>
 
 struct virtex2_pld_device
 {