sources2db: add --verbose flag, be quiet by default
sources2db: add --verbose flag, be quiet by default

devoxel/debsources,nonas/debian-qa,zacchiro/debsources,Debian/debsources,zacchiro/debsources,Debian/debsources,vivekanand1101/debsources,sophiejjj/debsources,sophiejjj/debsources,clemux/debsources,zacchiro/debsources,clemux/debsources,oorestisime/debsources,sophiejjj/debsources,matthieucan/debsources,vivekanand1101/debsources,nonas/debian-qa,oorestisime/debsources,Debian/debsources,matthieucan/debsources,vivekanand1101/debsources,matthieucan/debsources,clemux/debsources,devoxel/debsources,devoxel/debsources,devoxel/debsources,nonas/debian-qa,oorestisime/debsources,sophiejjj/debsources,vivekanand1101/debsources,zacchiro/debsources,Debian/debsources,Debian/debsources,vivekanand1101/debsources,devoxel/debsources,sophiejjj/debsources,clemux/debsources,nonas/debian-qa,clemux/debsources,matthieucan/debsources,matthieucan/debsources,zacchiro/debsources,oorestisime/debsources,oorestisime/debsources