Cosmetic changes in barista.cc
Changed portaudio-reader's polling interval to 200 ms.
Simplified FindGraphviz.cmake script.
Added FindKaldi.cmake script.
Added FindLibCPPA.cmake script.
Added verbose option to configure.
Added Kaldi and libcppa search.
Updated FindKaldi.cmake to not search default paths/
Fixed order or Kaldi libraries returned by FindKaldi.cmake script.