Defines starting with `f' in ufs

• FORCE ufs/quota.h:162
• FS_42POSTBLFMT ufs/fs.h:235
• FS_DYNAMICPOSTBLFMT ufs/fs.h:236
• FS_MAGIC ufs/fs.h:139
• FSOKAY ufs/fs.h:140
• FS_OPTSPACE ufs/fs.h:230
• FS_OPTTIME ufs/fs.h:229