Add cling output streams to cling/Utils/Output.h

interpreter/cling/include/cling/Interpreter/Interpreter.h

interpreter/cling/include/cling/Utils/Output.h

interpreter/cling/include/cling/Utils/Paths.h

interpreter/cling/lib/Interpreter/AutoloadCallback.cpp

interpreter/cling/lib/Interpreter/CIFactory.cpp

interpreter/cling/lib/Interpreter/ClangInternalState.cpp

interpreter/cling/lib/Interpreter/ClingPragmas.cpp

interpreter/cling/lib/Interpreter/DynamicLibraryManager.cpp

interpreter/cling/lib/Interpreter/DynamicLookup.cpp

interpreter/cling/lib/Interpreter/ForwardDeclPrinter.cpp

interpreter/cling/lib/Interpreter/IncrementalExecutor.cpp

interpreter/cling/lib/Interpreter/IncrementalParser.cpp

interpreter/cling/lib/Interpreter/Interpreter.cpp

interpreter/cling/lib/Interpreter/InvocationOptions.cpp

interpreter/cling/lib/Interpreter/RequiredSymbols.cpp

interpreter/cling/lib/Interpreter/Transaction.cpp

interpreter/cling/lib/Interpreter/Value.cpp

interpreter/cling/lib/Interpreter/ValuePrinter.cpp

interpreter/cling/lib/MetaProcessor/MetaParser.cpp

interpreter/cling/lib/MetaProcessor/MetaProcessor.cpp