Give @briefs to all namespaces.

This will force recompilation of all files.

src/ScreenManager.cpp

@@ -81,6 +81,7 @@ static Preference<bool> g_bPruneFonts( "PruneFonts", true );
 // Screen registration
 static map<RString,CreateScreenFn>	*g_pmapRegistrees = NULL;
 
+/** @brief Utility functions for the ScreenManager. */
 namespace ScreenManagerUtil
 {
 	// in draw order first to last