autocorr: speeding up computation somewhat
autocorr: speeding up computation somewhat

  * dotprod_xxxt_run() -> dotprod_xxxt_run4()
  * storing energy buffer as array instead of window object
  * retain running sum of energy rather than re-computing it every time

JayKickliter/liquid-dsp,jgaeddert/liquid-dsp,manuts/liquid-dsp,andrepuschmann/liquid-dsp,andrepuschmann/liquid-dsp,jgaeddert/liquid-dsp,jgaeddert/liquid-dsp,wangning223/liquid-dsp,biotrump/liquid-dsp,jgaeddert/liquid-dsp,biotrump/liquid-dsp,andrepuschmann/liquid-dsp,cjcliffe/liquid-dsp,cjcliffe/liquid-dsp,JayKickliter/liquid-dsp,manuts/liquid-dsp,andrepuschmann/liquid-dsp,JayKickliter/liquid-dsp,wangning223/liquid-dsp,wangning223/liquid-dsp,cjcliffe/liquid-dsp,wangning223/liquid-dsp,manuts/liquid-dsp,jgaeddert/liquid-dsp,cjcliffe/liquid-dsp,biotrump/liquid-dsp,manuts/liquid-dsp,biotrump/liquid-dsp,andrepuschmann/liquid-dsp,cjcliffe/liquid-dsp,JayKickliter/liquid-dsp,JayKickliter/liquid-dsp,manuts/liquid-dsp,wangning223/liquid-dsp,biotrump/liquid-dsp