Definitive list of storage classes

[Jonathan M Davis]

I'd like to know which modifiers are considered to be storage classes. The term 
seems to be used on a lot more than actually qualifies (including using the 
term for the type qualfiers: const, immutable, and shared), and even the 
documentation uses it on stuff that I wouldn't have thought would be considered 
storage classes, because they have no effect on how variables are stored or 
linked (e.g. synchronized).

Someone asked about it on stackoverflow, and my explanation is not as good as 
it should be simply because I can't find a definitive list anywhere:

http://stackoverflow.com/questions/10150510/what-are-the-storage-classes-in-d

- Jonathan M Davis