<UnitsGlob directory="./" recursive="1" wildcard="*" />
There is an undocumented (experimental) feature.
You have to tweak your projectfiles manually, see: http://forums.codeblocks.org/index.php/topic,16958.msg115908.html#msg115908
I had to explicitely set the wildcard to "*" (on linux) to cover all filetypes:Code<UnitsGlob directory="./" recursive="1" wildcard="*" />