[kronolith] Fix for Kronolith and PostgreSQL 8.3.x

[Marc Balmer]

The attached diff adds explicit typecasts where needed and makes
Kronolith happy on PostgreSQL again.  This should also be safe
on MySQL.

- Marc Balmer

-- 
        SELECT services FROM companies WHERE name = 'micro systems'

marc balmer, micro systems, wiesendamm 2a, postfach, ch-4019 basel
internet www.msys.ch, phone +41 61 383 05 10, fax +41 61 383 05 12
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