Defines starting with `e' in quakeworld

• edgelist quakeworld/client/r_edgea.s:42
• edgestoadd quakeworld/client/r_edgea.s:41
• EF_BLUE quakeworld/client/gl_model.h:42
• EF_BRIGHTFIELD quakeworld/client/gl_model.h:36
• EF_BRIGHTLIGHT quakeworld/client/gl_model.h:38
• EF_DIMLIGHT quakeworld/client/gl_model.h:39
• EF_FLAG1 quakeworld/client/gl_model.h:40
• EF_FLAG2 quakeworld/client/gl_model.h:41
• EF_MUZZLEFLASH quakeworld/client/gl_model.h:37
• EF_RED quakeworld/client/gl_model.h:43
• EMAXS quakeworld/server/math.s:21
• EMINS quakeworld/server/math.s:20
• ERROR_BAD_DISK_CHANGE quakeworld/client/cd_audio.c:30
• ERROR_BAD_REQUEST_LEN quakeworld/client/cd_audio.c:20
• ERROR_CRC_ERROR quakeworld/client/cd_audio.c:19
• ERROR_DRIVE_NOT_READY quakeworld/client/cd_audio.c:17
• ERROR_GENERAL_FAILURE quakeworld/client/cd_audio.c:27
• ERROR_OUT_OF_PAPER quakeworld/client/cd_audio.c:24
• ERROR_READ_FAULT quakeworld/client/cd_audio.c:26
• ERROR_RESERVED_13 quakeworld/client/cd_audio.c:28
• ERROR_RESERVED_14 quakeworld/client/cd_audio.c:29
• ERROR_SECTOR_NOT_FOUND quakeworld/client/cd_audio.c:23
• ERROR_SEEK_ERROR quakeworld/client/cd_audio.c:21
• ERROR_UNKNOWN_COMMAND quakeworld/client/cd_audio.c:18
• ERROR_UNKNOWN_MEDIA quakeworld/client/cd_audio.c:22
• ERROR_UNKNOWN_UNIT quakeworld/client/cd_audio.c:16
• ERROR_WRITE_FAULT quakeworld/client/cd_audio.c:25
• ERROR_WRITE_PROTECT quakeworld/client/cd_audio.c:15
• espan_t_count quakeworld/client/asm_draw.h:41
• espan_t_pnext quakeworld/client/asm_draw.h:42
• espan_t_size quakeworld/client/asm_draw.h:43
• espan_t_u quakeworld/client/asm_draw.h:39
• espan_t_v quakeworld/client/asm_draw.h:40
• et_nearzi quakeworld/client/asm_draw.h:72
• et_next quakeworld/client/asm_draw.h:69
• et_nextremove quakeworld/client/asm_draw.h:71
• et_owner quakeworld/client/asm_draw.h:73
• et_prev quakeworld/client/asm_draw.h:68
• et_size quakeworld/client/asm_draw.h:74
• et_surfs quakeworld/client/asm_draw.h:70
• et_u quakeworld/client/asm_draw.h:66
• et_u_step quakeworld/client/asm_draw.h:67