When storing '015700' microseconds in a Datetime object,
Datetime::format('u') returns '015699'

Already known per bug45554 reproducer (also fixed).

see: http://news.php.net/php.bugs/173451

This reverts commit 46a3f257724df7b85cc8c3e6374c36ed9ee783b4.

The behaviour on windows is to select an arbitrary timezone from the
current system settings. This gives no chance to hardcode the timezone
name, for instance for UTC+1 it could choose from the multiple names
like Europe/Berlin or Europe/Paris . For this reason the test is
parametrized so there is no hardcoded timezone data.

The original test made to be skipped on windows and a duplicate was made
for windows. Tested on debian and win7 both x86.

The behaviour on windows is to select an arbitrary timezone from the current system settings.
This gives no chance to hardcode the timezone name, for instance for UTC+1 it could choose
from the multiple names like Europe/Berlin or Europe/Paris . For this reason the test is
parametrized so there is no hardcoded timezone data.

The original test made to be skipped on windows and a duplicate was made for windows.