[daemon] add unit tests backend
Issue generated from Tuleap's migration script. Originally submitted by: Guillaume Roguez (guillaume)
The daemon code is big enough to request unit testing.
We need to search and implement a suitable unit test infrastucture that
will be the backend to write unit tests.
This ones have to be runned in automatic way: so our the solution shall be compatible
with our build methodology (see our Jenking build backend).