* src/plugins/rel_fi.py: Convert to new interface. Add to CVS.
* src/plugins/rel_fr.py: Convert to new interface. Add to CVS.
* src/plugins/rel_no.py: Convert to new interface. Add to CVS.
* src/plugins/rel_sv.py: Convert to new interface. Add to CVS.
* src/plugins/Makefile.am: Ship new files.
* src/Relationship.py (apply_filter): Keep gender info of all
member in the relationship chain, not just number of generations;
(is_spouse): correctly compare handles; (get_relationship_distance,
get_relationship, get_grandparents_string): correctly use apply_filter.
* src/plugins/rel_it.py (get_relationship): Correctly use apply_filter.
* src/plugins/rel_hu.py (get_relationship): Correctly use apply_filter.
* src/plugins/rel_de.py (is_spouse): Remove function;
(get_relationship): Correctly use apply_filter.
* src/plugins/rel_ru.py (is_spouse): Remove function;
(get_relationship): Correctly use apply_filter.
svn: r3452
