6432459 ufsboot mishandles sparse and fallocated files

[sommerf...@sun.com]

Author: sommerfe
Repository: /hg/onnv/onnv-gate
Revision: 02d366661bf5671a7be62aa58d18f5a54201ef69
Log message:
6432459 ufsboot mishandles sparse and fallocated files

Files:
        update: usr/src/stand/lib/fs/ufs/ufsops.c