Hi bug list,

I've been happily using the native-comp branch and it works well. Attached is a tiny change to set `backtrace-line-length' in comp.el's async workers. I was debugging a few failed compilations and had run `(setq backtrace-line-length 0)` in an attempt to see the full path of the offending files (turned out to be autoloads). The setting was having no effect on the async compile errors and I realized the batch-mode worker processes weren't inheriting it.

I haven't signed CA papers since this change is so small, but am happy to if that's needed.

Thanks!

-Phil