* m4/winsz.m4 (AM_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL): Use

	* m4/winsz.m4 (AM_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL): Use
	3-argument form of AC_DEFINE.
	* m4/regex.m4 (AM_WITH_REGEX): Use 3-argument form of AC_DEFINE.
	* m4/ptrdiff.m4 (AM_TYPE_PTRDIFF_T): Use 3-argument form of
	AC_DEFINE.
	* m4/protos.m4 (AM_C_PROTOTYPES):Use 3-argument form of
	AC_DEFINE.
	* m4/obstack.m4 (AM_FUNC_OBSTACK): Use 3-argument form of
	AC_DEFINE.
	* m4/init.m4 (AM_INIT_AUTOMAKE): Use 3-argument form of
	AC_DEFINE.
	* m4/dmalloc.m4 (AM_WITH_DMALLOC): Use 3-argument form of
	AC_DEFINE.