dpkg: bc detection was failing, rework

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
scripts: sync with master

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
(saucy): one native build fix

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Merge remote-tracking branch 'origin/v3.10.x' into v3.10.x-wand