Class attribute

[Phil Mayers]

> 
>> As far as I know none of the rfc updating 2865 redefine the class attribute.
>> Is there a reason for this, is it safe to make it a string value?
> 
>   I very much suggest leaving it alone.  Editing things just to make the
> "closer" to the RFC's is not a good idea.  The RFC's are well known to
> be wrong in many cases.

One point of (probably minor) interest; we changed it to be "string" 
here, because it allowed us to get readable text in SQL queries.

i.e. before we had:

insert into blah ... '%{Class}'

...expanding to:

insert into blah ... '0xTHEHEX'

...and if it's a string we get:

insert into blah ... 'thestring'

...but that only works because we *know* that we're putting readable 
strings into Class everywhere.