Using a private itss.dll header

[James Hawkins]

Hi,

I need access to the definition of the IITStorage interface which is
only defined in dlls/itss/itss.h.  This interface is used to gain
access to CHM help files.  The Win32 public headers don't have this
interface publicly available, so would that restrict us from moving
itss.h to wine/include?  Another solution would be to copy itss.h to
dlls/hhctrl.ocx and use that, but that seems like a waste to me. 
Anyone have any ideas?