[Runtime] Enable tizen locale and add set function for variable locale.

Application data will be set a locale when first created
or the application locale is changed.

Application Locale Tizen can get the latest locale
from vconf‘s notify.

And use Lock may be not a good idea, to replace it
with PostTask to do .

We need refresh data on the dbus when application locale
is changed(because we may get a new name on new locale).