src: initial localization support (work in progress)
This is a work in progress effort to introduce the optional ability to localize node's own outputs. Currently, Node (and V8) outputs english only error, debug and help output. This is a step towards allowing translated versions of node to be built.
Currently, this is hidden behind the --with-intl=full-icu switch. This is because there are certain capabilities of ICU that are only enabled with the full data set.
This is a work in progress that SHOULD NOT BE LANDED in master yet.
/cc @srl295 @mhdawson