In Turkey, there isn't much of a "personal space" between the males. On the streets you can see guys walking together very closely, arm in arm or especially arm on shoulders of each others in almost any age groups from school boys to the oldsters. In most of the European countries that can be perceived as gayness, because that personal space thing is crazy important there.
However hand holding is entirely another thing in Turkey. Because unlike some arabian countries, it's linked with romanticism strongly. So if you see a male couple holding hands of each other in Turkey, you can assume that they're most likely partners.