(ABI_64BIT): Delete.
(TARGET_LONG64, CPP_SPEC, STACK_BOUNDARY, MIPS_STACK_ALIGN,
GP_ARG_LAST, FP_ARG_LAST, SUBTARGET_CONDITIONAL_REGISTER_USAGE,
MAX_ARGS_IN_REGISTER, FUNCTION_ARG_PADDING, RETURN_IN_MEMORY,
SETUP_INCOMING_VARARGS): Modify.
(REG_PARM_STACK_SPACE): Ifdef out.
(TARGET_DEFAULT, SUBTARGET_TARGET_OPTIONS): Define.

From-SVN: r12135