Comment 13 for bug 731177

@Nick
The INX and Python files don't need to be directly translated. Instead, we add the original version in the Inkscape source and compile it so that the strings are translatable in the global Inkscape PO file. Thus to make Gcodetools translatable, it first needs to be in the trunk. Then you can translate it to any language with poedit or the PO editor of your choice (the PO files are located in http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/files/head:/po/) and attach the translated PO file to a new report so that it can be tested and committed.

As for the 0.49 version, you can either compile it or download a binary version. Did you check http://inkscape.org/download/ ?