Merge two wiki pages on portage and software development

Project:Web site
Component:Documentation
Category:task
Priority:normal
Assigned:Unassigned
Status:active
Related pages:#10463: Emerge: custom builds :-:-: #13956: Portage and software development
Tags:Portage
Description

Merge two wiki pages on portage and software development.
See linked wiki pages.
I created "Emerge: custom builds" first, but "Portage and software development" is a better title.