* somewhere along the road, all of plugins dir was added to sys.path, this
is not ok, we only needed lib on sys.path
* As due to the GEP we can import from the plugin directory, better just
import the lib modules needed, and avoid sys.path extension
* At the same time this fixes a bug due to __init__.py being present, import
of a file named equal to the plugin directory was importing the __init__.py,
not the intended file.
svn: r20481
