Hi,

as I mentioned a few days ago, since this function grew rather big, I 
hope to clean it up a bit. For now at least nothing ground shaking: I 
moved together some declarations and initializations; in other cases 
exploited the opportunity C++ gives to defer declarations; consistently 
changed some int flags to bool (and avoiding names ending by *p for non 
bools); plus rather obvious stylistic tweaks (like wrapping way overlong 
lines). I'm also improving a bit the diagnostics - see the new testcases 
- telling apart <inline> and <constexpr> in two error messages. It's a 
start. How does it look to you?

Tested x86_64-linux.

Thanks,
Paolo.

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