* Makerules (+depfiles): Translate %.so to %.o in $(extra-objs).
* malloc/free.c [emacs] (__malloc_safe_bcopy): Define to safe_bcopy.
* malloc/realloc.c (__malloc_safe_bcopy): Undefine before defining.
* malloc/free.c (memmove, __malloc_safe_bcopy): Do include these
#ifdef emacs, but only #ifndef memmove.
* malloc/realloc.c [emacs] (__malloc_safe_bcopy): Just #define to
safe_bcopy.
(memmove): Define only if undefined.
* stdio/_itoa.h (_EXTERN_INLINE): Define if undefined.
(_itoa): Use it in defn.
