Update from main repo.

* Add a more reliable transient detection mode, and make the mode
   selectable using OptionDetectorXXX flags -- the new method is
   the default
 * Band-limit transient detectors to avoid being distracted by
   inaudible garbage
 * Add a key-frame mapping facility for variable stretch ratio
   management during offline stretches

src/RubberBandStretcher.cpp

@@ -3,7 +3,7 @@
 /*
     Rubber Band
     An audio time-stretching and pitch-shifting library.
-    Copyright 2007-2009 Chris Cannam.
+    Copyright 2007-2010 Chris Cannam.
     
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -74,6 +74,12 @@ RubberBandStretcher::setTransientsOption(Options options)
     m_d->setTransientsOption(options);
 }
 
+void
+RubberBandStretcher::setDetectorOption(Options options) 
+{
+    m_d->setDetectorOption(options);
+}
+
 void
 RubberBandStretcher::setPhaseOption(Options options) 
 {
@@ -104,6 +110,12 @@ RubberBandStretcher::setMaxProcessSize(size_t samples)
     m_d->setMaxProcessSize(samples);
 }
 
+void
+RubberBandStretcher::setKeyFrameMap(const std::map<size_t, size_t> &mapping)
+{
+    m_d->setKeyFrameMap(mapping);
+}
+
 size_t
 RubberBandStretcher::getSamplesRequired() const
 {