InterMezzo versioning

After quite a bit of discussion we decided on the following.  

- Versions will be recorded in lento/lento and in CVS. 
- Versions will be real numbers.  

Named versions will be:

[single digit major version].
	[single digit minor version][two digit patch release]

Odd minor versions: development
Even minor versions: stable

Linux development has "-testXX" and "-preYY" releases.  We will have
something similar, but in our case versions will always increase:

[single digit major version].
	[single digit minor version][two digit patch release]
	[two digit test release number]
 
So our versioning will be a real number of the form:

M.NPPTT

M = major
N = minor
PP = patch
TT = test
