6949 - snapshot of next raytracing milestone

Not yet right, but worth a snapshot just because it gives a cool result.
Here, try it out:
  $ ./translate_mu_debug apps/raytracing/3.mu
  $ ./a.elf > x.ppm
Now view x.ppm as an image.

In general, this was quite tedious to write. And a still-open question
is how to emit the progress bar to stderr. My options are to either duplicate
all my print-* functions (already proliferating) or add global variables
to Mu.

1 files changed, 0 insertions, 0 deletions

diff --git a/apps/mu b/apps/mu
index 74d614fc..b704d8e5 100755
--- a/apps/mu
+++ b/apps/mu
Binary files differ