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, 20 deletions

diff --git a/410file.mu b/410file.mu
deleted file mode 100644
index 86dac7bd..00000000
--- a/410file.mu
+++ /dev/null
@@ -1,20 +0,0 @@
-fn read-lines in: (addr buffered-file), out: (addr handle array (handle array byte)) {
-  var stream: (stream (handle array byte) 0x10)
-  var stream-a/edi: (addr stream (handle array byte)) <- address stream
-  var line: (stream byte 0x10)
-  var line-a/esi: (addr stream byte) <- address line
-  {
-    clear-stream line-a
-    read-line-buffered in, line-a
-    var done?/eax: boolean <- stream-empty? line-a
-    compare done?, 0/false
-    break-if-!=
-#?     print-string 0, "AAA\n"
-    var h: (handle array byte)
-    var ah/eax: (addr handle array byte) <- address h
-    stream-to-array line-a, ah
-    write-to-stream stream-a, ah
-    loop
-  }
-  stream-to-array stream-a, out
-}