Macros starting with `v' in netinet

• VIFM_CLR netinet/ip_mroute.h:73
• VIFM_CLRALL netinet/ip_mroute.h:75
• VIFM_COPY netinet/ip_mroute.h:76
• VIFM_ISSET netinet/ip_mroute.h:74
• VIFM_SAME netinet/ip_mroute.h:77
• VIFM_SET netinet/ip_mroute.h:72