Tests not working with PHP 5.3

While working on #988188: Restrict access to the (expensive) issue statistics pages, I noticed that all project and project_issue tests refused to run on my local machine, always resulting in an xdebug "max_nesting_levels" exceeded error.

I tracked it down to the way project and project_issue implement the setUp function:

    // We can't call parent::setUp() with a single array argument, so we need
    // this ugly call_user_func_array().
    call_user_func_array(array($this, 'parent::setUp'), $modules);

...which doesn't seem to work on PHP 5.3 (results in an infinite loop). If I alter the above to...

    // We can't call parent::setUp() with a single array argument, so we need
    // this ugly call_user_func_array().
    call_user_func_array(array('parent', 'setUp'), $modules);

...then the tests all run fine (although I'm guessing the above won't work in PHP < 5.3).

The good news is that #985470: Backport allowing modules as a single array parameter in setUp() landed, so setUp() now accepts a single array argument (at least in the Simpletest-6.x-2.x-dev branch), hence we can chuck out the hack!