When to bump the build?

[Bill Nottingham]

seth vidal (skvidal at phy.duke.edu) said: 
> > Well, it seems to be enforced by script that prepares package for their 
> > build system, so it is well understood.
> 
> so not so much policy as common use.

Well....

All builds in the build system must be unique. If you nuke a build
before it actually gets pushed anywhere, you can get away with
re-using a release number, but it's generally recommended to bump
them.

Bill