* hash.c: Include objc-private/hash.h instead of objc/hash.h.

        * objc/sarray.h: Moved into objc/deprecated/sarray.h;
        objc/sarray.h replaced with a placeholder including the file from
        the deprecated/ directory.
        * objc-private/sarray.h: New file (private copy of sarray.h).
        * hash.c: Include <assert.h> instead of "assert.h"
        * sarray.c: Include <assert.h> instead of "assert.h".  Include
        objc-private/sarray.h instead of objc/sarray.h.
        * selector.c: Include objc-private/sarray.h instead of
        objc/sarray.h.
        * sendmsg.c: Include <assert.h>.  Include objc-private/sarray.h
        instead of objc/sarray.h.
        * Makefile.in (OBJC_DEPRECATED_H): Added sarray.h.

From-SVN: r164389