HashTableNext() crashes on hash tables built using HASH_INT_KEYS, and
it cannot check as it takes no hash point.

Instead created a HashTableNextInt() function so the caller can use
the appropriate function.


git-svn-id: svn://svn.code.sf.net/p/staden/code/io_lib@3602 ba6f2710-ca9f-427c-89d3-5bf716dbc8e1
Yet more hackiness.

The total block sizes are now broken down by content_id value and in
turn by the data series that have been observed using that
content_id. This makes it easier to see the size by type.


git-svn-id: svn://svn.code.sf.net/p/staden/code/io_lib@3603 ba6f2710-ca9f-427c-89d3-5bf716dbc8e1
Fixed calculation of bmax. It's not perfect and can be foiled by large
content_id values.


git-svn-id: svn://svn.code.sf.net/p/staden/code/io_lib@3604 ba6f2710-ca9f-427c-89d3-5bf716dbc8e1