deprecation

[Roland McGrath]

> GLIBC_PRIVATE symbols are also used by at least some of the miscellaneous 
> executables built by glibc, not just glibc libraries.

Good point.

> Some of this may be by accident (errno is used from GLIBC_PRIVATE,
> because I think of the definitions in include/errno.h).

That is probably accidental and probably should be fixed.
But nowadays I think it would make sense to officially export the TLS errno.

> Some looks more deliberate (the iconv program using __gconv_get_alias_db).

Right.  I think such cases are probably OK as they are.


Thanks,
Roland