parameterize BSIZE, FSIZE, and FRAG into fs_bsize, fs_fsize, and fs_frag

parameterize BSIZE, FSIZE, and FRAG into fs_bsize, fs_fsize, and fs_frag

SCCS-vsn: sys/ufs/ffs/fs.h 1.9
SCCS-vsn: include/protocols/dumprestore.h 1.3
SCCS-vsn: sys/ufs/ffs/ffs_alloc.c 1.11
SCCS-vsn: sys/ufs/lfs/lfs_alloc.c 1.11
SCCS-vsn: sys/ufs/ffs/ffs_tables.c 1.3
SCCS-vsn: sbin/newfs/mkfs.c 1.10
SCCS-vsn: sbin/fsck/main.c 1.14
SCCS-vsn: old/dcheck/dcheck.c 1.4
SCCS-vsn: sbin/icheck/icheck.c 1.10
SCCS-vsn: sbin/ncheck/ncheck.c 1.4
SCCS-vsn: sbin/dumpfs/dumpfs.c 1.6
SCCS-vsn: sbin/restore/main.c 1.8
SCCS-vsn: sbin/dump/dump.h 1.4
SCCS-vsn: sbin/dump/itime.c 1.4
SCCS-vsn: sbin/dump/main.c 1.5
SCCS-vsn: sbin/dump/tape.c 1.5
SCCS-vsn: sbin/dump/traverse.c 1.4