allow lowering the debug output threshold (i.e. make file/function less verbose) via config file

Debug/DebConfig.cc

@@ -139,8 +139,9 @@ int Config::Impl::level(const char* const _flnm, const char* const _fnct) const
     fltr_it != lvl_fltrs_.end(); ++fltr_it)
   {// continue this iteration until the maximum allowed level if found
     const LevelFilterMap::value_type& fltr = *fltr_it;
-    if (lvl >= fltr.first) // can this filter increase the current level?
-      continue;      
+// The following two lines where commented out to allow lowering the threshold.
+//    if (lvl >= fltr.first) // can this filter increase the current level?
+//      continue;
     if (fltr.second.select_file(_flnm) || fltr.second.select_function(_fnct))
       lvl = fltr.first;
   }