Auto-resolving of external resources

[rodionmoiseev]

Forked from issue #2

Implement a @C10NResource annotation to support the following construts.

@C10NMessages
public interface MyMessages{
  //Defer to ResourceBundle-like locale resolution 
  // (e.g. look for text_ja_JP.txt for Jp locale)
  @C10NResource(extRes="file://absolute/path/text.txt")
  String textFileContents2();

  //Access internal (in-the-jar) resources
  @C10NResource(intRes="com/example/text.txt")
  String internalResourceContents();
}