* config/rs6000/eabi.h (TARGET_OS_CPP_BUILTINS): Define builtins
	common to rs6000 sysv targets.
	* config/rs6000/eabisim.h (TARGET_OS_CPP_BUILTINS): Ditto.
	* config/rs6000/rtems.h (TARGET_OS_CPP_BUILTINS): Ditto.

From-SVN: r67708