Tests: Disable rawapi tests for now:
The rawapi tests segfaults, but the abstract API tests still work fine, and since the abstract API uses the raw API ...

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Abstract: Progressive scan: don't purge the line list before we start scanning a new image.
The caller might call get_image() in the meantime, and we need the lines for this function

Signed-off-by: Jerome Flesch <jflesch@gmail.com>