sources:
  antlr-3.4.tar.gz: 068a6bc929f9f0d6d643b31e7b56064f1bdb8442
  antlr-javascript-runtime-3.1.zip: c7827e3f5315f7688fbbd04e22863213802ac627
  antlr_python_runtime-3.1.3.tar.gz: dc095863a254cdf9606784dbd6efb43cf56a6804
  libantlr3c-3.4.tar.gz: 6728a0f4b99c0a3bc73936218604e01550617ff1