[latexrefman] Under- and over-full lines

[Karl Berry]

    Except the index, which I don't see how to do.

I got rid of the two overfull lines in the index by changing the text.
I also played around with the Command Line Options table in a way you
might not like ... I'll revert if you prefer.

Looking at the indexes now, I really think we should merge them into
one. They have become so long (which is good :) that it is a drag to
look in both, and I don't see the win of making people look in both
places. Close enough to All the entries are sufficiently identifiable,
it seemed to me.

I see the note about ltx-help.el using the node name "Command Index"; we
can leave an @anchor behind so it still works (or should), in case
anyone still cares about that.

Wdyt? -k