Created some javadoc patches; Found also some suspicious code

[Tjeerd Verhagen]

In the patches are 2 TODO's, of some suspicious code.

org.apache.ivy.util.ConfigurationUtils
Added a TODO for checking some code in the method:
- public static String[] replaceWildcards(String[] confs, ModuleDescriptor
md)


org.apache.ivy.util.filter.FilterHelper
Added a TODO for checking some code in the method:
- public static Filter getArtifactTypeFilter(String types)

Patches can be found under IVY-544  Javadoc improvements