#22 Version of the download dir

[Nicolas Chalumeau]

I think about a global download version like if you
create a tag with CVS (I was for a subversion like
versionning method in that case : all the resository
will have a version number and each element have a
version number too).
What could be the best :
- the user create the tag himself
- the downloads are tagged for each new installation of
a package
- the download are tag everyday or ...