Adding initial Teensy 3 support, compiles, but not fully functional yet.

- CDC Output seems to be working
- USB Keyboard output has not been tested, but is "ready"
- UART and Timers have not been tested, or fully utilized
- Issues using Timer 0
- Initial template for MBC-55X Scan module (only module currently compatible with the arm build)
- Updated the interface to the AVR usb module for symmetry with the ARM usb module
- Much gutting was done to the Teensy 3 usb keyboard module, though not in an ideal state yet

Scan/MBC-55X/setup.cmake

@@ -0,0 +1,48 @@
+###| CMake Kiibohd Controller Scan Module |###
+#
+# Written by Jacob Alexander in 2013 for the Kiibohd Controller
+#
+# Released into the Public Domain
+#
+# For the Sanyo MBC-55X Series of keyboards
+#
+###
+
+
+###
+# Module C files
+#
+
+set( SCAN_SRCS
+	scan_loop.c
+)
+
+
+###
+# Module H files
+#
+set( SCAN_HDRS
+	scan_loop.h
+)
+
+
+###
+# File Dependency Setup
+#
+ADD_FILE_DEPENDENCIES( scan_loop.c ${SCAN_HDRS} )
+#add_file_dependencies( scan_loop.c ${SCAN_HDRS} )
+#add_file_dependencies( macro.c keymap.h facom6684.h )
+
+
+###
+# Module Specific Options
+#
+add_definitions( -I${HEAD_DIR}/Keymap )
+
+#| Keymap Settings
+add_definitions(
+	-DMODIFIER_MASK=facom6684_ModifierMask
+	#-DKEYINDEX_MASK=facom6684_ColemakMap
+	-DKEYINDEX_MASK=facom6684_DefaultMap
+)
+