patches for dictd/dictfmt : allchars search

[<ch...@sc...>]

dictd-1.7.1 release uses only alphanumeric characters for searching.

This is Ok for ordinary dictionaries, but why not to create dictionary
with non-alnumspace characters.

The attached patches allows to do so.
DICTFMT should be run with '--allchars' argument and
adds '00-database-allchars' special entry to the .index file.

DICTD uses it and changes search algorithm respectively.

The patches assumes that my previous patches are also applied.

I've created a small "smiley" dictionary and it is avalable at
mova.org or http://mova.org/~cheusov/cgi-bin/dict.cgi

Best wishes.