i18n: remove timestamp and versions from generated files

The timestamps result in lots of churn in the diffs each time
we regenerate the files. Every file appears to be touched
even if it's just fixing a minor bug.

The version info seems somewhat useful so I moved that to
separate files ending with "versions.txt".

I'll commit the generated files as a separate patch.

Change-Id: I0c5f13047d1bc5ce3eec951a93f0f3a3621287b9
GSS converter fails to convert upper case constant with hyphen

Bug: issue 9031
Change-Id: Iea5c22173c5a735cfb1c1fa21f01d4d4ef177839