* config/mips/netbsd.h (TARGET_OS_CPP_BUILTINS): Define.
(CPP_PREDEFINES): Make sure this is undefined.
(CPP_SPEC): Place -D__mips=1 at the beginning of the spec,
since it is no longer in CPP_PREDEFINES. Don't -U__MIPSEL__
or -U__MIPSEB__ before defining one or the other. Instead,
use %(subtarget_endian_default) if neither -EB nor -EL are
specified.
(SUBTARGET_EXTRA_SPECS): Define.
(SUBTARGET_CPP_SPEC): Remove __LONG64 handling. Use
%(netbsd_cpp_spec).