rfc: VERSION change

[Gedare Bloom]

Hi,

I would like to propose we change the version numbering system for the
development (and release branches) to represent the next pending
release number for that branch. So VERSION would contain, for the
following branches:
master -> 4.11.0
4.10 -> 4.10.3
4.9 -> 4.9.7
4.8 -> 4.8.3

This will simplify a number of release-related procedures, as well as
make the master tool versions align with the VERSION information.
Hopefully it will also reduce user confusion.

Register any complaints or cheers here.

-Gedare