- Update rtems-bsp support to correctly handle hosts for BSP.
- Clean up the options for a BSP.
- Check all RTEMS 5 packages and add 5/rtems-packages for all that build.
- Update download locations and checksum of all packages.
- The work requires the kernel and Libbsd hacve the same prefix.
The command python has been removed from upstream python and python2
and python3 is now used. This patch wraps the commands in a shell
script that locates a suitable python to run.
Updates #3537