* nsimage.m (ImageList, imageListNext, imageListSetNext:)
(reference): Remove.
(allocInitFromFile:): Remove searching ImageList and calling
reference.
(dealloc): Remove handling if ImageList.

* nsterm.h (EmacsImage): Remove imageListNext, refCount, reference,
imageListSetNext, imageListNext.
Fix memory leak

* nsimage.m (allocInitFromFile:): Initialize bmRep.
(dealloc): Release bmRep.