Added an application migration document for STM32 F1->F2 transition
Moved core specific bootloader files to src/core-v1 folder
Added modified scripts
Remove main header file
Added dfu_hal and related bootloader files update
Indentation formatting correction
Fix compilation error after deleting main header file
Moved STM32F2XX startup file to startup folder and updated script
Deleted unused SPARK_Linker/ in STM32F2xx
Added STM32F2XX linker files
Added various usb related application files
Added stm32f2 conf and interrupt files
Added dfu_hal for core-v2
Added build script support files for core-v2 (WIP)
Move stm32f2xx_conf header to platform specific folder
Added include.mk and sources.mk files to STM32F2xx subfolders
Moved STM32F2XX usb device driver files under a common inc/src folder
Added a placeholder file for deleting blank directories in repo
Deleted unused directories and files
Moved STM32F2XX usb host driver files under a common inc/src folder