- cleanup warnings and rework exceptions to be more robust
- CORTEX R5: Initialization of stack pointer
- updates to F021 flash from testing
- sync options for command line build with IDE
* add flash demo from RAM
* clean up linker script and flags
* Add hercules test-app: link script and minimal c file
`make CCS_ROOT=/c/ti/ccs1031/ccs/tools/compiler/ti-cgt-arm_20.2.4.LTS F021_DIR=/c/ti/Hercules/F021\ Flash\ API/02.01.01`