0.11.0-m2

Run unit tests in multiple modules

In repositories with multiple modules, tests must be run in each
module separately, excluding any packages which are in a
“sub-module”.

This fixes unit_test.sh to look for modules, and run the tests in each
module. If tests fail, subsequent modules will still be tested, but
the overall result will reflect the failure.

Fixes: #626
Signed-off-by: Stephen Kitt <[email protected]>