When we try to load a changed set which might have more entries, a
previous maxelem could have been smaller preventing us from adding new
entries.

We also cannot run the "create" command with a changed maxelem
parameter which is why this patch set the value to something that should
be large enough for everything.

The downside of this is also, that we cannot modify the hashsize when we
reload a set, which is probably okay, since sets should not change too
much in size and therefore will only run *slightly* less efficient - if
at all.
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>