Remove global "using namespace std;" declarations, use "std::" prefixes on all std elements

Fix whitespace changes

src/ScreenSelect.cpp

@@ -76,7 +76,7 @@ void ScreenSelect::Init()
 		// Each element in the list is a choice name. This level of indirection 
 		// makes it easier to add or remove items without having to change a
 		// bunch of indices.
-		vector<RString> asChoiceNames;
+		std::vector<RString> asChoiceNames;
 		split( CHOICE_NAMES, ",", asChoiceNames, true );
 
 		for( unsigned c=0; c<asChoiceNames.size(); c++ )