* objc/runtime.h: Moved to objc-private/runtime.h. Do not include
all the objc/*.h files.
* objc-private/runtime.h: New file.
* archive.c: Include objc-private/runtime.h (and required objc/*.h
files) instead of objc/runtime.h.
* class.c: Same change.
* hash.c: Same change.
* init.c: Same change.
* misc.c: Same change.
* nil_method.c: Same change.
* objects.c: Same change.
* sarray.c: Same change.
* selector.c: Same change.
* sendmsg.c: Same change.
* thr.c: Same change.
From-SVN: r164213
