freebsd.h (SVR4_ASM_SPEC): Don't define.

freebsd.h (SVR4_ASM_SPEC): Don't define.

	* config/rs6000/freebsd.h (SVR4_ASM_SPEC): Don't define.
	(DBX_REGISTER_NUMBER): Define.
	* config/rs6000/lynx.h (DBX_REGISTER_NUMBER): Define.
	* config/rs6000/netbsd.h (DBX_REGISTER_NUMBER): Define.
	* config/rs6000/sysv4.h (SIZE_TYPE): Define.
	(ASM_SPEC): Define without using SVR4_ASM_SPEC.
	(DBX_REGISTER_NUMBER): Undefine.
	* config.gcc (powerpc-*-eabispe*, powerpc-*-eabisimaltivec*,
	powerpc-*-eabisim*, powerpc-*-elf*, powerpc-*-eabialtivec*,
	powerpc-xilinx-eabi*, powerpc-*-eabi*, powerpc-*-rtems*,
	powerpc-*-linux* | powerpc64-*-linux*, powerpc64-*-gnu*,
	powerpc-*-gnu-gnualtivec*, powerpc-*-gnu*,
	powerpc-wrs-vxworks|powerpc-wrs-vxworksae, powerpcle-*-elf*,
	powerpcle-*-eabisim*, powerpcle-*-eabi*): Don't use svr4.h.

From-SVN: r168085