* Fix failure to remember that we have constructed an interpolator

window already (#25).  Also avoid using alloca for substantial buffers
* Lose FFT::getFloatTimeBuffer and getDoubleTimeBuffer -- it's too
unclear when it's safe to use them and it's safer to control sizes externally.
In RB with smoothing on, these buffers were incorrectly being used for window-si
zed calculations (larger than FFT-sized).
* Fix some incorrect buffer resize sizes
* Build fixes for OS/X

src/StretcherImpl.cpp

@@ -783,8 +783,10 @@ RubberBandStretcher::Impl::reconfigure()
                 new Resampler(Resampler::FastestTolerable, 1, m_sWindowSize,
                               m_debugLevel);
 
-            m_channelData[c]->setResampleBufSize
-                (lrintf(ceil((m_increment * m_timeRatio * 2) / m_pitchScale)));
+            size_t rbs = 
+                lrintf(ceil((m_increment * m_timeRatio * 2) / m_pitchScale));
+            if (rbs < m_increment * 16) rbs = m_increment * 16;
+            m_channelData[c]->setResampleBufSize(rbs);
         }
     }