* [vcpkg docs] add docs for manifest files
These are just for the maintainer docs,
not user docs.
* [vcpkg] EBNF-ify platform expression parsing
this modifies nothing about what strings are accepted or rejected,
it just moves stuff around.
also adds tests.
* [vcpkg docs] add manifest mode example
* [wip] docs for augustin
also fix tabs
* [vcpkg manifest] switch to using maps for features
* Apply suggestions from code review
* un-experimentize format-manifest
* flesh out the user manifest mode docs
* CRs
* billy CRs
* final personal pass-thru
--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.
