added rpmdbFindByProvides(), rpmdbFindByRequiredBy()
added rpmdbFindByProvides(), rpmdbFindByRequiredBy()

devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5