[rfa] remove more alpha plt entries

[Roland McGrath]

> 	* include/sys/resource.h (__getrlimit): Use libc_hidden_proto.
> 	(__getrusage, __setrlimit): Likewise.
> 	* include/sys/time.h (__settimeofday, __adjtime): Likewise.
> 	(__getitimer, __setitimer, __utimes): Likewise.
> 	* include/sys/wait.h (__waitpid, __wait4): Likewise.

These are internal names.  I think it suffices just to put attribute_hidden
on their decls and be done with it.  This patch is incomplete because it
doesn't add libc_hidden_def to each and every definition used by any
configuration, which is required.  (libc_hidden_proto turns on renaming
magic that makes the normal definitions not define the necessary symbols in
the absence of libc_hidden_def.)

> +libc_hidden_proto(__getrlimit)
> +libc_hidden_proto(__getrusage)
> +libc_hidden_proto(__setrlimit)

Put a space before (.