Sorting of MODULE-unused.sgml

[Owen Taylor <otaylor redhat com>]

I just realized that one reason that MODULE-unused.sgml is such a 
mess of CVS conflicts and random changes is that it is written
in hash table order:

    while (($symbol, $symbol_desc) = each (%SymbolDocs)) {

Any objections if I change that to:

    for $symbol (sort keys %SymbolDocs) {
       $symbol_desc = $SymbolDocs{$symbol}

? It will cause some changes in cases where the -unused file isn't
changed, but should help things a bunch in general.

Regards,
                                        Owen