Fix failure to calculate offline stretch correctly when a zero-chunk region is found; provide alternate projection calculation method for R3 without stop-the-world phase resets

src/common/StretchCalculator.h

@@ -71,7 +71,8 @@ public:
                         float curveValue,
                         size_t increment,
                         size_t analysisWindowSize,
-                        size_t synthesisWindowSize);
+                        size_t synthesisWindowSize,
+                        bool alignFrameStarts);
 
     void setUseHardPeaks(bool use) { m_useHardPeaks = use; }