[fixincludes] Fix posix_spawn* declarations in Solaris <spawn.h> (PR c++/49347)

[Bruce Korb]

On 07/25/11 08:17, Rainer Orth wrote:
> As discussed in the PR, the Solaris 10+<spawn.h>  header needs a fix to
> make it work with g++.  The following patch implements it.
>
> It passed a i386-pc-solaris2.11 bootstrap without regressions and make
> check in fixincludes works without failures.
>
> Ok for mainline?

Hi Rainer,

 > some-function(char *const argv[_RESTRICT_KYWD], ...)

looks pretty broken to me.  How would it work with plain gcc?
Anyway, editing the _RESTRICT_KYWD into the correct place looks
correct to me, and I'm sure you tested.  "Ship it".  Methinks
all active branches, too....