bug#12541: Prefer plain 'static' to 'static inline'.

[Eli Zaretskii]

> From: Jason Rumney <jasonr@gnu.org>
> Cc: Paul Eggert <eggert@cs.ucla.edu>,  12541@debbugs.gnu.org
> Date: Sun, 30 Sep 2012 22:18:48 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > The inline functions in bidi.c _must_ be inlined for performance
> > reasons.  If the only way to make sure they are is to make them
> > external, then so be it.
> 
> The only way to ensure they are inlined is to make them macros. Modern
> compilers treat "inline" as a hint, not an instruction, if they take any
> notice of it at all.

In general, you are right.  But I would settle with getting the right
result in practice.  Surely, for GCC at least the information must be
there.