vchoi_fork

[svn-r4600] Purpose:
    Bug fix.
Description:
    The internal B-tree code was dumping core with an assertion failure when
    flushing data to the file if too many objects were put into the same B-tree
    (forcing the root node to split, I think).
Solution:
    Fixed the B-tree copy routine to copy the correct number of raw keys.
Platforms tested:
    FreeBSD 4.4 (hawkwind), Solaris 2.6 (baldric)