[PATCH][Solaris] Default to -fno-cxa-finalize

[Xan López via cfe-commits]

On Tue, Sep 08, 2015 at 01:27:42PM +0200, Xan López via cfe-commits wrote:
> > What do you consider as recent Solaris? When I asked, I've been told
> > that Illumos has been providing __cxa_atexit since 2013. As such,
> > disabling it for the Solaris family by default seems just wrong.
> 
> Solaris 11.2, which is the latest non-beta version available.

(Also, if you read the entire thread you'll see we figured that symbol
was probably never available in Solaris, see the referenced commit
from 2013, so the bit about the version being "recent" is irrelevant
and it was removed from the final commit message)