hash/hash.h:106 changed 'errno' member to 'htab_errno' in 'struct htab'
hash/hash.c:changed all occurences of 'hashp->errno' to 'hashp->htab_errno'
hash/hash.c:133 commented out fcntl call
hash/hash.c:306 hardcoded 512 for statbuf.st_blksize
hash/hash_page.c:870 commented out fcntl call
btree/bt_open.c:215 commented out fcntl call
btree/bt_oepn.c:262 hardcoded 512 for statbuf.st_blksize
