* config.gcc (powerpc*-*-linux*): Include gnu-user.h in tm_file.
	* config/rs6000/sysv4.h (CC!_SPEC): Undefine it before defining it.
	* config/rs6000/linux.h (CPLUSPLUS_CPP_SPEC): Delete define.
	(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
	(USE_LD_AS_NEEDED): Likewise.
	(ASM_APP_ON): Likewise.
	(ASM_APP_OFF): Likewise.
	(TARGET_POSIX_IO): Likewise.
	* config/rs6000/linux64.h (CPLUSPLUS_CPP_SPEC): Likewise.
	(LINK_GCC_C_SEQUENCE_SPEC): Likewise.
	(USE_LD_AS_NEEDED): Likewise.
	(ASM_APP_ON): Likewise.
	(ASM_APP_OFF): Likewise.
	(TARGET_POSIX_IO): Likewise.

From-SVN: r213125