GitLab

* legacy: refactored ErrorfWithLogger function

Now is no longer needed, this function was basically made for
arduino-builder to allow transfering the error to the IDE, BTW the
correct fix must be made inside arduino-builder (to actually let him
push the error in the logger).

* Renamed legacy ctx fields ExecStdout/ExecStderr to Stdout/Stderr

* Removed empty Lint() function

* Removed dependency on i18n.Logger

* Removed no more used i18n.Logger \o/ \o/

* Simplified i18n.Init function

* legacy: builder default output on os.Stdout/os.Stderr

* legacy: updated integration tests for slightly different output of builder

* Use positional parameter for most translated string

This will make easier to transfer translations from the Arduino IDE 1.8

* Added note to UPGRADING.md

* Updated UPGRADING.md

* Removed extra blank line in library detection recap

* Update docs/UPGRADING.md
Co-authored-by: per1234 <accounts@perglass.com>