refactored transformation: added folders for each transformation

src/ParallelizationRegions/ParRegions.cpp

@@ -1,4 +1,4 @@
-#include "../Utils/leak_detector.h"
+#include "leak_detector.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -15,7 +15,7 @@
 #include "../GraphCall/graph_calls_func.h"
 #include "../GraphLoop/graph_loops.h"
 #include "../Distribution/Distribution.h"
-#include "../ExpressionTransform/expr_transform.h"
+#include "expr_transform.h"
 
 using std::vector;
 using std::string;