Looking for code review of: https://github.com/apache/tika/pull/395
This addresses TIKA-1735 and it also adds the ability for the dwg parser to utilize the LibreDWG library if it is configured. The DWG reading code is much too vast and complex to hope to port to Java. So similar to how we do tesseract, if DWGConfig.properties is present on the classpath and contains a valid path to the dwgread executable, it will call dwgread to extract text from DWG files. In terms of unit tests - need some love there. Is there some way we can get libre DWG installed on the jenkins server so that it can actually run the tests that exercise dwgread? -Nicholas
