Defines starting with `e' in bsd/netccitt

• ERROR_PACKET bsd/netccitt/pk.h:115
• EXCAB bsd/netccitt/x25err.h:81
• EXCBUSY bsd/netccitt/x25err.h:76
• EXCINV bsd/netccitt/x25err.h:80
• EXCLEAR bsd/netccitt/x25err.h:75
• EXCLPE bsd/netccitt/x25err.h:82
• EXCNCG bsd/netccitt/x25err.h:83
• EXCNOB bsd/netccitt/x25err.h:84
• EXCOUT bsd/netccitt/x25err.h:77
• EXCRPE bsd/netccitt/x25err.h:78
• EXRESET bsd/netccitt/x25err.h:69
• EXRLPE bsd/netccitt/x25err.h:72
• EXROUT bsd/netccitt/x25err.h:70
• EXRRPE bsd/netccitt/x25err.h:71