libio patches for glibc 2.1

[Joe Buck]

> > How can the egcs/glibc interface be made less volatile?  What factors
> > are causing the problems?
> 
> The changes in the patch Andreas sent are necessary since libio must
> support the extended iostream functionality of the C++ standard.  I've
> added the code to glibc already since this is my development
> environment.

Ah, so the disruption is just for extended and wide streams?  Then it
seems that it should be a one-time thing.