Backed out changeset 06fdd8089539

It looks like the icu lib has an issue handling a non-English system locale
(aka someone calling `setlocale`) and formatting numbers. See PHP bug #53735
and ICU ticket #6711. Even though this works fine with Windows, it's generally
problematic. If we could ensure no one is using `setlocale` and that all
formatting goes through our (newly helper) class (bye bye, strftime), then using
intl if possible would be fine. Until then, we have no choice but to remove the
usage of the intl extension alltogether.

Sad panda day.

--HG--
branch : 0.9