intl patches (23)

[Ulrich Drepper]

Bruno Haible <haible@ilog.fr> writes:

> A portability patch: ISO C says that the arguments of <ctype.h> functions
> must be 'int's in the value range of an 'unsigned char', not 'char'.

This is ugly.  And I consider systems which use signed chars and do
not allow these values to be passed directly to the isxxx() functions
broken.  But since the performance or code size on sane systems isn't
affected I've applied the patch.

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