JcrEngine passes incorrect property values to custom AuthenticationProviders,
given the following configuration in configRepository.xml:

<mode:authenticationProvider jcr:name="CustomProviderA" 
                 mode:classname="org.example.MyAppAuthorizationProvider">
  <mode:appName>MyAppName</mode:appName>
</mode:authenticationProvider>

instead of "MyAppName" MyAppAuthorizationProvider.setAppName( ) is passed the name of the repository source.