We should add code to enumerate/iterate application/console windows on the "desktop" (or equivalent) of GUI-based operating systems.

On Windows, the EnumWindows() function is probably the best starting point, combined with [EnumChildWindows](https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winu

It would be cute to be able to identify the source code from which a particular microwatt cpu implementation was built. If the build process could look for the git SHA1 ID of the current head and include that as a constant value in the build, hooked up to the syscon framework so it could be read by MMIO, that could be useful. We would probably want (say) 32 bits of SHA1 plus a dirty flag.

Then