Add support for the Arduino Micro board, fix other Arduino board LED drivers.

LUFA/DoxygenPages/ChangeLog.txt

@@ -12,6 +12,7 @@
   *   - Updated the BUILD build system module to add a new COMPILER_PATH optional variable
   *   - Added Serial_IsSendReady() and Serial_IsSendComplete() functions to the Serial hardware peripheral driver
   *   - Added support for the Arduino Yun board (ATMEGA32U4 coprocessor)
+  *   - Added support for the Arduino Micro board
   *  - Library Applications:
   *   - Added new Dual MIDI class driver device demo
   *

LUFA/DoxygenPages/DeviceSupport.txt

@@ -96,8 +96,9 @@
  *  \section Sec_AVR8Support_ThirdParty Supported Third Party Boards
  *  Currently supported third-party boards (see \ref Group_BoardTypes for makefile \c BOARD constant names):
  *   - Adafruit U4 Breakout Board
- *   - Arduino Uno
  *   - Arduino Leonardo
+ *   - Arduino Micro
+ *   - Arduino Uno
  *   - Arduino Yun
  *   - Bitwizard Multio and Big-Multio
  *   - Busware BUI