Patch: Add support for stabilize timeout

[abierbaum@…]

This patch adds support for the concept of letting the repository stabilize before starting a build. What often happens on our projects atleast is that a developer will check in a big group of related changes over the course of multiple minutes. Each of these changes "should" compile on their own, but it is actually the full group that we want to test.

This change adds a "stabilize_timeout" configuration option that can specify the number of seconds old a revision has to be before we consider it for a build.

Changes include:

• Addition of stabilize_timeout configuration parameter
  
• Extending the admin interface to allow editing this parameter
  
• Refactoring the code in bitten/queue.py to use the value when populating the builds
  

WARNING: I do not have Trac 0.11dev installed, so I was not able to test this there. I think the time code may have to be refined for 0.11, but I do not know for sure.

[anonymous]

Patch to add stabilize_timeout option.

[cmlenz]

Applied in [515]. Thanks!