We should comment that these two actions with something like this:
properties file name in multilocale repo don't contain locale name,
instead, they are sorted in folder whose name is the locale name.
Also, whereas ini and properties files are segregated in app 'locales' folder,
in multilocale repos, they are just put in matching app folder.
So /gaia/apps/system/locales/system.en-US.properties
maps to /gaia-l10n/en-US/system/system.properties