Prepare for handling pkg state with files. So it requires having the
path defined before declaring targets. In addition, it cleans up the
old git-download target.
pic32prog is a program for flashing pic32 boards from command line on Linux.
It works with:
* Microchip PICkit2
* Microchip PICkit3 with script firmware.
* Other ones: https://github.com/sergev/pic32prog/wiki