Language chooser. Version 2

[Michael Sobolev <mss@transas.com>]

Well, I believe that the information declared in langs.h file is sufficient.
So I am not going to modify it.  This also means that program lc and list are
not changed as well.

Version 2 tries to address the need of supporting multiple platforms.  To my
mind, what I have implemented is rather ugly. :)  I believe, the DTD shold be
better thought out (correct? :)

I think that at least those languages that are declared in kbdconfig.c file,
should appear on the screen.  Although, there is a problem here: we have three
places where localization appears:

    -- the dialog of language chooser program
    -- keyboard set
    -- messages for dbootstrap program

I'd say that all languages that are presented in dbootstrap/po directory should
appear as a separate menu item in main dialog of lc program.  But what to do
with other languages?  Like Bulgarian, Turkish, etc...  Where to put these?
Should we create a separate menu item, but warn users that no native language
dialogs are available for them?

Then, there are five supported platforms.  But there are also
sub-architectures.  These are detected at the time dbootstrap is started.  For
different sub-architectures there could be different sets of keyboards (e.g.
for Amigaa dn Atari).  How to cope with them?

There is also a problem with fonts.  I put LatArCyrHeb font into example files.
And they look fine on my computer; when I sent the lc program to a friend of
mine, he said that after starting the program he only had 8 colors.  It's only
then when I recalled that on VGA consoles 512 characters large console fonts
may result in problems.  So I think we should specify 256 characters large
fonts with appropriate acms (if needed).

Then, I do not have any access to platforms other than i386.  So I would not be
surprised if the current program has something i386 specific.

Please comment,

--
Mike