[drupal-docs] versioning handbook

[Anisa]

Versioning the handbook is a bit more complicated than versioning drupal 
code.

Okay, so one suggestion by Boris is here: 
http://dev.bryght.com/t/wiki/BorisOriginalRant

One thing to consider is, how much of the handbook actually changes with 
each Drupal version?

What happens when you want to add info that is valid for all drupal 
versions?

I personally think most of the handbook is not too too version specific 
after a certain point.  In that case, perhaps a viable option is to 
consider version specific info the exception rather than the rule.  Add 
to the applicable section, for info on how to do this in 4.4 go here, 
4.5 go here.  You will have to decide how far back you want to support 
in terms of this (not too far back, maybe the past .2 versions, like 
4.4, 4.5, and currently 4.6). 

How do ya'll plan on working in Bryght and other support documents?

Anisa.