Enable SIGCHLD to stop childs complaining to SIG_IGN of it. It helps perl f.e.
Enable SIGCHLD to stop childs complaining to SIG_IGN of it.
It helps perl f.e.

Obtained from:	OpenBSD do_command.c v1.7

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase