[rgmanager] Set cloexec bit in msg_socket.c
[rgmanager] Set cloexec bit in msg_socket.c

Resolves Red Hat bugzilla #433313.  Rgmanager did not
have the close on exec bit set for any sockets it was
managing, causing problems with SELinux

stevenraspudic/resource-agents,asp24/resource-agents,asp24/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents