--editable suppresses binary caching and source re-extraction for packages listed on the command line (similar to --head).
This fundamentally changes the port maintenance loop, so several example documents were updated. To avoid users having substantial changes suddenly destroyed by forgetting to pass --editable, "clean" sources have different extract locations.
The undocumented command `build` implies `--editable`.
Co-authored-by: Robert Schumacher <roschuma@microsoft.com>
The current names and titles of the examples put too much emphasis on the package which is being demonstrated rather than the concept. This can be jarring for newcomers. This patch renames them to put the emphasis on the concept instead.
