[Libvir] Added python binding for autostart flag

The vir{Domain,Network}GetAutostart() methods are missing from the python binding because they used an int * as a parameter. The attached patch adds a hand-written impl of these two APIs for the python binding. Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|