Obfuscating properties.xml entries would be designed to prohibit casual acquisition of database passwords.
The proposal would be to have a dual property fetch, as follows. For a potentially-obfuscated property "x", the code would first look for "x.obfuscated". If that property was found, it would de-obfuscate the results. If not found, it would look for the property "x", and use those results un-obfuscated.
The full implementation of this ticket will also require support for command-line invocation of the Obfuscate class, so that obfuscated passwords can be generated. The scripts supporting this would be delivered in a manner similar to that of the scripting engine.