Fix unit tests

Depends on https://github.com/zetacomponents/UnitTest/pull/3

PHPUnit 3.7.29 by Sebastian Bergmann.

Configuration read from /home/fox/src/php/ezsystems/zetacomponents/Feed/phpunit.xml.dist

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Time: 9.75 seconds, Memory: 12.00Mb

OK, but incomplete or skipped tests!
Tests: 813, Assertions: 855, Incomplete: 1.


We are now able to setup an account on http://travis-ci.org and get this package automatically tested.
It is used to test the feed registration code, see tests/extend_test.php l#225