fix gcc linker scripts to match ccs memory map
modify bootloader to run as firmware to update the bootloader
adjust Makefile to support to targets for the bootloader code
bl: which is the "normal" bootloader
as_fw: which is a bootloader modified to run as firmware and update the bootloader
Merge branch 'FreeRTOS-gcc' of github.com:polybassa/WyLight into FreeRTOS-gcc