[translations] determining correct import

[Jakub Suchy]

> nothing...Should be simplier if everybody is using PHP5 with exceptions.

A little monologue, but too typical for me. I am getting ideas in FIFO
:-)

A register_shutdown_function() is called even if Fatal error: max
execution time...is thrown. This works for PHP4 too. We can at least
print a message to user (not whole page, because
register_shutdown_function() is called during the shutdown)