Cross-platform Development support

[jgulian]

At the current point, portions of the development cycle only work on certain operating systems. For instance, building and objcopying needs to be done on windows* or macos, but building the image must be done on ubuntu. Windows may be able to do everything but I am unsure at this time.

It is desirable that everything works on every operating system. Looking into this will occur in the next refinement phase.

* building kernel works on windows but it is not known whether it works for user applications.