[COMMITTED PATCH] Fix setenv.c diagnostic pragma to be compatible with GCC 4.6

[Andreas Schwab]

Roland McGrath <roland@hack.frob.com> writes:

> +#if ((__GNUC__ << 16) + __GNUC_MINOR__) >= ((4 << 16) + 7)
       __GNUC_PREREQ (4, 7)

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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