[RFA:] Take 2 to get libstdc++-v3 to bootstrap-land for glibc 2.0 and libc1.

[Benjamin Kosnik]

> Ok to commit?

Yes, this looks fine. Please check it in.

> 2000-11-23  Hans-Peter Nilsson  <hp@bitrange.com>
> 
> 	* config/os/gnu-linux/bits/os_defines.h: Include <features.h>.
> 	If not glibc 2.1 or higher, include <gnu/types.h> and define
> 	__off64_t as __loff_t and #define __THROW as empty.
> 
> 	* libio/libio.h [__P]: Move __THROW and __PMT into their own
> 	ifndef:s.