add support for clang on windows (cmake&ninja)
add support for clang on windows (cmake&ninja)

tesseract-ocr/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,stweil/tesseract,jbarlow83/tesseract,UB-Mannheim/tesseract,stweil/tesseract,stweil/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,amitdo/tesseract,stweil/tesseract,tesseract-ocr/tesseract,amitdo/tesseract,jbarlow83/tesseract,UB-Mannheim/tesseract,amitdo/tesseract,jbarlow83/tesseract,amitdo/tesseract,stweil/tesseract,UB-Mannheim/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,amitdo/tesseract,jbarlow83/tesseract