7842 - new directory organization

Baremetal is now the default build target and therefore has its sources
at the top-level. Baremetal programs build using the phase-2 Mu toolchain
that requires a Linux kernel. This phase-2 codebase which used to be at
the top-level is now under the linux/ directory. Finally, the phase-2 toolchain,
while self-hosting, has a way to bootstrap from a C implementation, which
is now stored in linux/bootstrap. The bootstrap C implementation uses some
literate programming tools that are now in linux/bootstrap/tools.

So the whole thing has gotten inverted. Each directory should build one
artifact and include the main sources (along with standard library). Tools
used for building it are relegated to sub-directories, even though those
tools are often useful in their own right, and have had lots of interesting
programs written using them.

A couple of things have gotten dropped in this process:
  - I had old ways to run on just a Linux kernel, or with a Soso kernel.
    No more.
  - I had some old tooling for running a single test at the cursor. I haven't
    used that lately. Maybe I'll bring it back one day.

The reorg isn't done yet. Still to do:
  - redo documentation everywhere. All the README files, all other markdown,
    particularly vocabulary.md.
  - clean up how-to-run comments at the start of programs everywhere
  - rethink what to do with the html/ directory. Do we even want to keep
    supporting it?

In spite of these shortcomings, all the scripts at the top-level, linux/
and linux/bootstrap are working. The names of the scripts also feel reasonable.
This is a good milestone to take stock at.

1 files changed, 0 insertions, 18 deletions

diff --git a/apps/raytracing/1.cc b/apps/raytracing/1.cc
deleted file mode 100644
index 254f531c..00000000
--- a/apps/raytracing/1.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-// https://raytracing.github.io/books/RayTracingInOneWeekend.html
-#include <iostream>
-
-int main() {
-
-    // Image
-
-    const int image_width = 256;
-    const int image_height = 256;
-
-    // Render
-
-    std::cout << "P3\n" << image_width << ' ' << image_height << "\n255\n";
-
-    for (int j = image_height-1; j >= 0; --j)
-        for (int i = 0; i < image_width; ++i)
-            std::cout << i << ' ' << j << " 64\n";
-}