Defines starting with `e' in quake2

• edgelist 321/linux/r_edgea.s:21
• edgestoadd 321/linux/r_edgea.s:20
• ENV_CNT 321/client/cl_main.c:1112
• ERR_DISCONNECT 321/ctf/q_shared.h:98
• ERR_DROP 321/ctf/q_shared.h:97
• ERR_FATAL 321/ctf/q_shared.h:96
• espan_t_count 321/linux/qasm.h:367
• espan_t_pnext 321/linux/qasm.h:368
• espan_t_size 321/linux/qasm.h:369
• espan_t_u 321/linux/qasm.h:365
• espan_t_v 321/linux/qasm.h:366
• et_nearzi 321/linux/qasm.h:398
• et_next 321/linux/qasm.h:395
• et_nextremove 321/linux/qasm.h:397
• et_owner 321/linux/qasm.h:399
• et_prev 321/linux/qasm.h:394
• et_size 321/linux/qasm.h:400
• et_surfs 321/linux/qasm.h:396
• et_u 321/linux/qasm.h:392
• et_u_step 321/linux/qasm.h:393
• EXEC_APPEND 321/qcommon/qcommon.h:354
• EXEC_INSERT 321/qcommon/qcommon.h:353
• EXEC_NOW 321/qcommon/qcommon.h:352