xfs_db: print one array element per line

xfs_db: print one array element per line

Print one array element per line so that the debugger output isn't
a gigantic pile of screen snow.

Before (inobt):

xfs_db> p recs
recs[1-55] = [startino,holemask,count,freecount,free]
1:[128,0,64,0,0] 2:[4288,0xff,32,0,0xffffffff] 3:[4352,0,64,0,0]
4:[4416,0,64,10,0x1f0003e000000000] 5:[4480,0,64,17,0xc00e1803c2007840]

After:

xfs_db> p recs
recs[1-55] = [startino,holemask,count,freecount,free]
1:[128,0,64,0,0]
2:[4288,0xff,32,0,0xffffffff]
3:[4352,0,64,0,0]
4:[4416,0,64,10,0x1f0003e000000000]
5:[4480,0,64,17,0xc00e1803c2007840]

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>