2 patches for libm.

[Ulrich Drepper]

"H . J . Lu" <hjl@valinux.com> writes:

> Here are 2 patches for libm. It exports __expl and __expm1l since
> they are used in sysdeps/i386/fpu/bits/mathinline.h and may not be
> inlined if -ffast-math is not used. Also we need __extension__ for
> -pedantic.

OK, except that the functions should only be exported for x86.

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