Defines starting with `e' in bsd/netccitt

• ERROR_PACKET bsd/netccitt/pk.h:118
• EXCAB bsd/netccitt/x25err.h:84
• EXCBUSY bsd/netccitt/x25err.h:79
• EXCINV bsd/netccitt/x25err.h:83
• EXCLEAR bsd/netccitt/x25err.h:78
• EXCLPE bsd/netccitt/x25err.h:85
• EXCNCG bsd/netccitt/x25err.h:86
• EXCNOB bsd/netccitt/x25err.h:87
• EXCOUT bsd/netccitt/x25err.h:80
• EXCRPE bsd/netccitt/x25err.h:81
• EXRESET bsd/netccitt/x25err.h:72
• EXRLPE bsd/netccitt/x25err.h:75
• EXROUT bsd/netccitt/x25err.h:73
• EXRRPE bsd/netccitt/x25err.h:74