message: Fix antlr4 build
  It appears that the earlier typo in the antlr directory was hiding other issues with building antlr.
  The ANTLR4CPP_STATIC macro was needed to make a static library.
  The antlr include directory was also needed to build antlr.
diff: @@ -68,10 +68,13 @@ hdlConvertor = Extension('hdlConvertor',
  extra_compile_args=['-std=c++11'],
  sources=ALL_SOURCE,
  language="c++",
  + define_macros=[('ANTLR4CPP_STATIC',None)]
  )
  antlr4 = ('antlr4',
  - {'sources': list(collectSourceFiles(ANTLR4_BASE))
  + {'sources': list(collectSourceFiles(ANTLR4_BASE)),
  + 'macros': [('ANTLR4CPP_STATIC', None)],
  + 'include_dirs': [ANTLR4_BASE]
  }
  )
  