Mozilla retires Firefox 4 from security support

[Alexandre]

Hi all,

Now the different versions of Firefox are :
- Release (version)
- Aurora (version +1)
- Nightly (version +2)

With this roadmap, you don't care with the version number of the release.
There will be only one, not like before with 3.6.x, 3.5.x ...
I think this is really more easy. You will stay with your release version of
Firefox and that's all. You just have to upgrade when needed.
Mozilla can spend energy to develop it software, not to maintain an older
version whose performance (or other) are deprecated.