Defines starting with `f' in ufs

• FORCE ufs/quota.h:161
• FS_42POSTBLFMT ufs/fs.h:231
• FS_DYNAMICPOSTBLFMT ufs/fs.h:232
• FS_MAGIC ufs/fs.h:135
• FSOKAY ufs/fs.h:136
• FS_OPTSPACE ufs/fs.h:226
• FS_OPTTIME ufs/fs.h:225