spark/core-common-lib — pull request #37 by satishgn (2014-09-10 15:07:21+00:00)
Title: Refactor/usb hal

All usb_xxx files moved from core-firmware to core-common-lib
Added new usb_hal.h/usb_hal.c files with CDC(used for Serial) and HID(used for Mouse/Keyboard) specific APIs