intl patches (29)

[Ulrich Drepper]

Bruno Haible <haible@ilog.fr> writes:

> Some portability tweaks relating to alloca and AIX 3:
>   - Since dcigettext.c has fallback code for systems without alloca(),
>     there is no need to test for C_ALLOCA. libintl is standalone.
>   - AIX preprocessor gives an error on empty macro arguments.
>   - plural.y needs an AIX specific #pragma.

OK, I've applied it.

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