Improved the detection of the most probable "site-packages" directory location that could have been false in presence of EGG packages on the system.
Improved the detection of the most probable "site-packages" directory
location that could have been false in presence of EGG packages on the
system.

inveniosoftware/invenio,tiborsimko/invenio,tiborsimko/invenio,inveniosoftware/invenio