Make calligra compile with clang

Clang has some additional restriction.

if (foo = bar) becomes if ((foo = bar)), while (foo=bar) while ((foo=bar))
and if ((baz==boz)) if (bas==boz) and so on.

patch by Matthew Rezny

CCMAIL: mrezny@hexaneinc.com
CCMAIL: calligra-devel@kde.org
CCMAIL: kimageshop@kde.org