fix includes for deps/reorg

src/serial-flash/SerialFlash.h

 #ifndef SerialFlash_h_
 #define SerialFlash_h_
 
-#include <Arduino.h>
-#include <SPI.h>
+#include <core/Arduino.h>
+#include <spi/SPI.h>
 
 class SerialFlashFile;
 

src/serial-flash/SerialFlashChip.cpp

  * THE SOFTWARE.
  */
 
-#include "SerialFlash.h"
-#include "util/SerialFlash_directwrite.h"
+#include "./SerialFlash.h"
+#include "./util/SerialFlash_directwrite.h"
 
 #define CSASSERT()  DIRECT_WRITE_LOW(cspin_basereg, cspin_bitmask)
 #define CSRELEASE() DIRECT_WRITE_HIGH(cspin_basereg, cspin_bitmask)

src/serial-flash/SerialFlashDirectory.cpp

  * THE SOFTWARE.
  */
 
-#include "SerialFlash.h"
+#include "./SerialFlash.h"
 
 /* On-chip SerialFlash file allocation data structures:
 

src/serial-flash/util/SerialFlash_directwrite.h

 // Adapted from OneWire.h
 
 #if ARDUINO >= 100
-#include "Arduino.h"       // for delayMicroseconds, digitalPinToBitMask, etc
+#include <core/Arduino.h>       // for delayMicroseconds, digitalPinToBitMask, etc
 #else
-#include "WProgram.h"      // for delayMicroseconds
-#include "pins_arduino.h"  // for digitalPinToBitMask, etc
+#include <core/WProgram.h>      // for delayMicroseconds
+#include <core/pins_arduino.h>  // for digitalPinToBitMask, etc
 #endif
 
 // Platform specific I/O definitions