Lengthen type field in node table

I read the code and looks fine with me. jvandyk says the pgsql way is necessary unless we want to support only 8.0

I am no SQL guru, but AFAIK this will greatly affect the memory usage of mysql. At least that is why i refraind from this solution and renamed node_aggregator to naggregator when that module bumbed into this 8 char limit.

Ber: I'd really like to have some proof or even evidence for this claim...

I don't think it is a problem.

I meant it as a question, because I am simply not sure.
http://dev.mysql.com/doc/mysql/en/data-size.html states that it really affects your speed and size when you use bigger fields. But I am simply not sure if this is completely true in this case. As sated: I am no sql guru. But i would like one to comment on this issue!

True, but we use varchar() fields, not char() fields. Their length is their contents + 1 byte for size. In the node table, I think the actual body contents pretty much make the other columns irrelevant as far as actual used size goes.

Commited to head.