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There is allready such module, partialy completed, and working with some modules such as Solo's multimenu language files. It's called Kiang Lang_Tool 0.06 alpha and can be downloaded from dev.xoops.org.
The module is without maintainer from long time, so before to try it, backup all files.
NOTE: U have to set 777 permissions to modules/module-name/language/xxx and yyy/
May The Source Be With You!