* archive-misc: don't attempt to link files from old "mirrors" directories
and files from the current build's "aptly" directory. They have
different ownership, so such link candidates are always ignored.
- Mirrors directory is created by "downlader" as the build user
- Aptly is created by the aptly container as root
* archive-dir.sh: extra debug message when ignoring such links
TESTS
=====================
* Manually test various files and make sure the ignored files are
ignored legitimately
* Observe a slight perofrmance improvement (14s => 13s)
* Run a sample Jenkins build
Change-Id: Iaefcec36d3decb181a541191b922723f7f643996
Signed-off-by: Davlet Panech <davlet.panech@windriver.com>