[tex-live] documentation for "geometry"

[Karl Berry]

    In TL there are many files which cannot be accessed by texdoctk yet.

I admit I don't see that as sufficient reason to invent strict new
directory structures.

It seems to me that what would be most general/useful is to create
doc-related data files which list what files are available, what
language they are in, and so on.  texdoc/texdoctk could be modified to
read such files much more easily than we change the whole tree around.

This also has the advantage of being incremental - doc descriptions can
be created for the most important packages first, whichever ones people
care to work on, and gradually be extended.

karl