the buildsystem will now pick up and link
all test cases according to the layer, e.g.
backend tests will automatically be linked
against the backend + library solely.
- to make it similar to Cehteh's tests, moved my testcode to tests/components
- made scons build the errortest and plugin-example as well
- scons check will run the suite
please note, my implementation work is quite incomplete (warnings, app shuttdown
not yet implemented); I hadn't success running the plugintest.