Also, for consistency, files are converted to objects (and back, in case)
every time they are passed to other modules.

Plus the usual minor cleanups and documentation fixes.

and Crell's D6 patch at issue #269073. filefield.module is not yet being
committed though, I don't feel like it's ready even for a -dev version
in the current state. Regard this commit as move to make it easier to work
on the #269073 patch.

Why is that? Bah. [insert random cursing]
So at least now everything should be in sync again.

t()'s.