vchoi_fork

[svn-r7572] Purpose:
    Bug fix

Description:
    When too many messages were inserted into an object header, the library
had an internal pointer to the "new message" that was pointing to the incorrect
location when the array of messages was re-allocated.
    In the worst case, this could cause a file to be corrupted.

Solution:
    Update the internal pointer when the array is re-allocated.

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    Too small to require h5committest