CHG: the thread comms refactoring from offical pm3 repo

chg: FPC com speed limited to 115200 when compiled with FPC
chg: USART remake (@drandreas)

client/flash.h

@@ -21,6 +21,8 @@
 #include "usb_cmd.h"
 #include "at91sam7s512.h"
 #include "util_posix.h"
+#include "util.h"
+#include "comms.h"
 
 typedef struct {
 	void *data;