binarytree: ignore separatedebug archives

When we use FEATURES=separatedebug, we create .debug.tbz2 files in the
binary tree that portage warns about.  Silence that here.

BUG=chromium:432294
TEST=using emerge doesn't issue "Binary package name is invalid" warnings

Change-Id: I23a60ba8bcfcd46a74547e137351b8c31a228f9d
Reviewed-on: https://chromium-review.googlesource.com/932581
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
1 file changed