+ - use the new MatchAgainstConfig for the DefaultRootSetFunc
+ * apt-pkg/contrib/error.{cc,h}:
+ - complete rewrite but use the same API
+ - add NOTICE and DEBUG as new types of a message
+ - add a simple stack handling to be able to delay error handling
+ * apt-pkg/aptconfiguration.cc:
+ - show a deprecation notice for APT::Acquire::Translation
+ * apt-pkg/contrib/configuration.{cc,h}:
+ - add a wrapper to match strings against configurable regex patterns
+ * apt-pkg/contrib/fileutl.cc:
+ - show notice about ignored file instead of being always silent
+ - add a Dir::Ignore-Files-Silently list option to control the notice
+ *