Tests: Add a way to write a Weston.ini inside the test
Currently doesn't exist a standard way to write a weston.ini inside a test.
Here, two new functions
cfgln are introduced to help
the test writer to write a weston.ini file and load it to the test.
To load it, the tester needs to call
in the same way as before. The
weston_ini_setup will fill the
setup->config_file with the correct path to the weston.ini file.