refs #413 Removed one overload of CRange::findBy and one of CSequence::applyIf; they were never used and they caused a circular dependency.

Templatized another overload of applyIf to break a circular dependency.

src/blackmisc/propertyindexvariantmap.h

@@ -14,20 +14,13 @@
 
 #include "variant.h"
 #include "valueobject.h"
-#include "propertyindex.h"
+#include "propertyindexlist.h"
 #include "blackmiscexport.h"
-
-// a) "propertyindex.h" needed for QMap below, despite forward declaration
-// b) "propertyindexlist.h" here causes circular dependencies
-
 #include <QVariantMap>
 #include <QDBusArgument>
 
 namespace BlackMisc
 {
-    // forward declaration
-    class CPropertyIndex;
-    class CPropertyIndexList;
 
     /*!
      * Specialized value object compliant map for variants,