CppEditor: Respect whitespace in operator names for more quick fixes

* Affected quick fixes: InsertDefFromDecl, MoveFuncDefOutside
* Fix also reformating pointer declaration of operator functions for
  qualified name ids

Change-Id: I6a7578f496221557d103f5fdbb5dacc9540ee779
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

src/libs/cplusplus/NamePrettyPrinter.cpp

@@ -105,7 +105,9 @@ void NamePrettyPrinter::visit(const DestructorNameId *name)
 
 void NamePrettyPrinter::visit(const OperatorNameId *name)
 {
-    _name += QLatin1String("operator ");
+    _name += QLatin1String("operator");
+    if (_overview->includeWhiteSpaceInOperatorName)
+        _name += QLatin1Char(' ');
     switch (name->kind()) { // ### i should probably do this in OperatorNameId
     case OperatorNameId::InvalidOp:
         _name += QLatin1String("<invalid>");

src/libs/cplusplus/Overview.cpp

@@ -45,6 +45,7 @@ Overview::Overview()
       showFunctionSignatures(true),
       showDefaultArguments(true),
       showTemplateParameters(false),
+      includeWhiteSpaceInOperatorName(true),
       markedArgument(0),
       markedArgumentBegin(0),
       markedArgumentEnd(0)

src/libs/cplusplus/Overview.h

@@ -108,6 +108,7 @@ public:
     bool showFunctionSignatures: 1;
     bool showDefaultArguments: 1;
     bool showTemplateParameters: 1;
+    bool includeWhiteSpaceInOperatorName: 1; /// "operator =()" vs "operator=()"
 
     /*!
         You can get the start and end position of a function argument