Merge pull request #130 from s-ludwig/master

[trivial] Update to ddox 0.9.20.
fix changed tool

- update to new bugzilla URL

- the automatic redirect escapes and thus breaks the request query_string
Merge pull request #131 from MartinNowak/fixChanged

fix changed tool
Upgrade to the latest DDOX with underscore_file_name_support.
Add a URL translation tool to be used with mod_rewrite.

This tool converts URLs of the form "/library/some/module/SomeSymbol.html" to
"/library/some/module/some_symbol.html", suitable to be used as a
"RewriteMap prg:" script.