[RFC] porting to gcc-4.3 docs

[Jonathan Wakely]

"If the old GNU extern inline behavior is desired, one can use extern
inline __attribute__((__gnu_inline__)). The use of this attribute can
be guarded by #ifdef __GNUC_STDC_INLINE__ which is a macro which is
defined when inline has the ISO C99 behavior, or compiled with
-fgnu89-inline option."

I think this is phrased a bit confusingly, the "or compiled with ..."
branch refers to the first sentence, but is part of the second
sentence which makes it seem like it's related to the macro.

This must be the english language equivalent of a dangling else.

The attached patch makes it clearer to me, does anyone agree?

Jon
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