misnamed define_builtin* in tm.texi

[Neil Booth]

Matt Kraai wrote:-

> Howdy,
> 
> The description of TARGET_CPU_CPP_BUILTINS references to
> builtin_macro and builtin_macro_std as well as builtin_define
> and builtin_define_std.  The former should be changed to the
> latter.
> 
> The following patch passed `make info' and `make dvi'.  OK to
> commit?

Yes, of course.

Thanks,

Neil.