Macros in miscfs/union

• FIXUP miscfs/union/union_vnops.c:54
• LOWERVP miscfs/union/union.h:111
• MOUNTTOUNIONMOUNT miscfs/union/union.h:108
• OTHERVP miscfs/union/union.h:113
• UNION_HASH miscfs/union/union_subr.c:60
• UNIONTOV miscfs/union/union.h:110
• UPPERVP miscfs/union/union.h:112
• VTOUNION miscfs/union/union.h:109