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/target/target.c

@@ -41,7 +41,7 @@
 #include "register.h"
 #include "trace.h"
 #include "image.h"
-#include "jtag.h"
+#include <jtag/jtag.h>
 
 
 static int target_array2mem(Jim_Interp *interp, struct target *target, int argc, Jim_Obj *const *argv);