Chris Sarbora

@InsanityBringer will do!

Ok, each commit now has the process used to generate it ("Delete unused srcs" is a doozy) and the commits are better broken apart to show the steps. The renderer...

We gon do this one? The longer it stays, the more likely we'll run into merge conflicts.

> If they aren't used, there shouldn't be merge conflicts. lol, good point - my concern was more around the `MACINTOSH` ifdef's.

@Lgt2x ah, from your comments it's clear I needed to add some documentation about the process. When cross-compiling, there have to be two CMake invocations: the first builds HogMaker using...

Conditionals improved and README updated.

ping @Lgt2x for re-review

Reworked PR to use @Lgt2x's idea of `ExternalProject_Add` instead of manually prebuilding and then using `find_package`.

@Lgt2x @winterheart how's this one looking review-wise? I'll get the merge conflicts updated tonight, but are there any other structural/functional/stylistic changes you'd like to see?

> With this approach you'll need to first build host tools and then reuse them on cross-compile environment. This was the _original_ approach with this PR, a few months ago....