forget_segments and copy_segments are already dead, release_segments is
used right now for i386 and x86_64 to release the ldt structures.
But the code is asymmetric: creation in init_new_context(), destruction
in release_segments().

What about the attached patch?
i386 and x86_64 can use destroy_context, then the _segment functions can
be removed entirely.

--
	Manfred