Rename structures to better match the names in the WSPP IDL.

Rename structures to better match the names in the WSPP IDL.

The 'comment' element in a number of domain structures is called
oem_information.  This was picked up actually because with OpenLDAP
doing the schema checking, it noticed that 'comment' was not a valid
attribute.

The rename tries to keep this consistant in both the LDB mappings and
IDL, so we don't make the same mistake in future.

This has no real schema impact, as this value isn't actually used for
anything, as 'comment' was not used in the provision.

Andrew Bartlett
(This used to be commit 65dc0d536590d055a5ee775606ac90ee5fcaee9a)