Variables starting with `e' in bsd/kern

• egid bsd/kern/kern_prot.c:377
• embutl bsd/kern/uipc_mbuf.c:96
• EOPNOTSUPP bsd/kern/sysv_ipc.c:111
• error_code bsd/kern/kern_symfile.c:71
• euid bsd/kern/kern_prot.c:320