build: require librepo-1.3.0
don't convert unicode to str and back. (RhBug:1025650)
adapting for hawkey behaviour of latest filter option in Query
removed by_name function from queries.py
removed by_repo function from queries.py
removed installed_exact function from queries.py
removed by_file function from queries.py
removed latest_installed_per_arch function from queries.py
removed latest_available_per_arch function from queries.py
removed downgrades_by_name function from queries.py
removed updates_by_name function from queries.py
INSTALLONLYPKGS: fix a typo

Without coma, Python merges the two lines.