Changing test system to include user defined tests.
Changing test system to include user defined tests.

Currently tests will will not work just checking out the repo, as the test
class is referring to a user directory that is currently being ignored.
This is a temporary solution to allow separation of the system core for the
mbed project specific UDFs and tests. This will be resolved later with use
of git sub-modules.

jaltekruse/EasyDB