The Dravidian and other (Harappan, Tibetan, Elamite, Sumerian, Ancient Egyptian, Swahili, Dogon, Bangime, Hausa, Yoruba, Mayan, Easter Island (Rongorongo), Maori/Polynesian Malay, Vietnamese, Thai, Japanese, Ainu, Chinese, Korean, Mancu-Tungus, Mongolic, Turkic, Georgian, Lycian, Lydian, Ugro-Finnic, Basque) languages in the light of heuristics and cryptology