Drupal 6 and PHP 5.6 (Debian Jessie)

After fixing #2493451: Puppet and Debian Jessie I noticed that our test suite still failed.

It's a known PHP 5.6 issue, fixed in Drupal 7.33 but not backported to Drupal 6 :(

The patch for D7 however applies nicely to Drupal 6.35.

I'm therefore adding that patch to the drupal6.make file in our provision-tests.

See: #2332295-23: Unicode requirements check not working with PHP 5.6