Add discussion regarding milestone builds and service releases

Submitted by Wayne Beaton @wbeaton

Link to original bug (#519320)

Description

The handbook lacks discussion nightly/integration/milestone builds. While these notions are discussed in the EDP, we have an opportunity to more fully define the different sorts of builds in more specific detail in the handbook, and guidance in terms of their intended audiences and distribution. At very least, we should provide pointers into the EDP. While we're at it, we should include service releases in that discussion. This all probably fits in the "Releases" section.

We should probably also add glossary entries, e.g.

• Build (with discussion of different sorts of builds)
• Milestone Build
• Integration Build
• Nightly Build

and

• Release
• Service Release
• Release Review

Some background discussion from the incubation mailing list:

-- According to the Eclipse handbook, we are supposed to follow the review process. Because we are not ready for entering the release process (from my point of view we don't have enough documentation as required in the handbook) I wanted to know if there is a possibility to provide kind of a snapshot distribution for testing purpose without entering the release process?

Response (thanks, Ed Merks):

-- Just do no call it a release. Don't use that word to describe what you've making available/redistributing. Of course almost all projects do nightly, integration, milestone, and release candidate builds and make those available as p2 update sites or otherwise for their consumers. You can do the same. A release review is only required to produce a release and you can do that when you feel the code is in a quality state that you feel comfortable can be represented as a stable release for your consumers.