Complete LibreOfficeKit C++ renaming.

Change-Id: Ice611cf5913051346a3a0c0b00ed35a35a0dfe3c
liblok: set the size for the correct structure.

Change-Id: Id79d76893bfc931334afd59b05ab96a31e441e02
liblok: check new methods via macros on nSize, not by de-referencing.

We can't check for NULL from beyond the end of a smaller structure.

Change-Id: Id3754bf747c402cf0d767eda5fd4b5ad6b5789e9