How do I link constraint data between objects? Normally if I have a material and want to put that material on say, 50 different objects, then I would select one object with that material, and then select the rest of the objects, hit Ctrl + L, and the material data would be copied to all the objects.

I have the exact situation I described above, except that I want to copy an object constraint from one object to all the other objects. Unfortunately the Ctrl + L menu doesn't have a "Constraints" button.

How do I copy this constraint to all the other objects?
Select object/-s without constraint/-s first, object with them last, in Object > Constraints menu choose Copy Constraints To Selected Objects.