[cvs-nhc98] patch applied (hat): Change FileOffset from unsigned long to uint32_t.

[Malcolm Wallace]

Thu Oct 19 03:12:07 PDT 2006  Malcolm.Wallace at cs.york.ac.uk
  * Change FileOffset from unsigned long to uint32_t.
  This is to guarantee that it remains 32-bits even on 64-bit machines.

    M ./include/art.h -1 +3
    M ./include/ntohl.h -1 +1
    M ./src/hatlib/hat-c.c -1 +1