Changes: code reviews

• Review means "see if this code looks good, and if possible test it"
• Results usually in requests to change code towards: portability, performance, legibility, completeness
• Core modules require super review: second-level review by senior developer
• Review, especially super review has helped improve code quality and keep regressions under control.
• Bugzilla provides attachstatuses to support review, and special UI.
• Over to QA!