New class LeakedObjectDetector, and JUCE_LEAK_DETECTOR macros for spotting leakages in a neat, cross-platform way. Used these to replace all the old juce_UseDebuggingNewOperator stuff in all the classes. Also some drawable and component transform fixes.

src/containers/juce_ReferenceCountedArray.h

@@ -689,10 +689,8 @@ public:
     typedef typename TypeOfCriticalSectionToUse::ScopedLockType ScopedLockType;
 
 
-    //==============================================================================
-    juce_UseDebuggingNewOperator
-
 private:
+    //==============================================================================
     ArrayAllocationBase <ObjectClass*, TypeOfCriticalSectionToUse> data;
     int numUsed;
 };