Implement suggestion by @gecampbell in #56
DataObject changes needed for rudimentary support for Object Manifests
Unnecessary(?) call to date_default_timezone_set() that causes unexpected side-effects
All calls to strtotime() appear to include a timezone specifier in the parameter anyway.
Fix to CDN not using correct URL (merge error)
Merge branch 'master' of github.com:starberry/php-opencloud

Conflicts:
	lib/OpenCloud/ObjectStore/DataObject.php