The scoreboard is no longer created while we can write to

stderr, so call ap_log_error() to note problems allocating
the scoreboard.

apr_shm_malloc() doesn't set any kind of error code, so don't
try to reference errno.

setup_shared() now returns an error code to its caller rather
than exiting directly.  This isn't a complete fix, as
ap_create_scoreboard() needs to do the same thing.  Currently,
when we can't allocate the scoreboard we leave the mod_cgid
daemon process stranded.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92592 13f79535-47bb-0310-9956-ffa450edef68