documentation on preparing a new release

[Jordan Gordeev]

Michael Neumann wrote:
Hi,

The release-src-cvsup target still contains the RELEASE_1_12 tag, 
which should instead be:

  -rDragonFly_RELEASE_2_0_Slip

I don't know where to find this file in the source tree, so I can't 
fix it myself. Anyone?

Regards,

  Michael
I think it's a good idea to have a "Making a new release" document which 
lists all the steps that are necessary for making an official release 
including all the places where the new release should be noted.