[tz] disclaimer removals

[Andreas Schwab]

"Clive D.W. Feather" <clive at davros.org> writes:

> isascii isn't part of the C Standard. It is better to follow C, which says
> that the argument to all the is* functions should be an unsigned char or
> EOF (which is what getc() and friends return).

It says that only about the functions that the C Standard defines.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab at suse.de
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