Merge pull request #6234 from asmorkalov:as/deb_version_check

cmake/OpenCVPackaging.cmake

@@ -19,6 +19,9 @@ OpenCV makes it easy for businesses to utilize and modify the code.")
   set(CPACK_PACKAGE_VERSION_MINOR "${OPENCV_VERSION_MINOR}")
   set(CPACK_PACKAGE_VERSION_PATCH "${OPENCV_VERSION_PATCH}")
   set(CPACK_PACKAGE_VERSION "${OPENCV_VCSVERSION}")
+  if (NOT "${OPENCV_VCSVERSION}" MATCHES "^${OPENCV_VERSION}.*")
+    message(WARNING "CPACK_PACKAGE_VERSION does not match version provided by version.hpp header!")
+  endif()
   set(OPENCV_DEBIAN_COPYRIGHT_FILE "")
 endif(NOT OPENCV_CUSTOM_PACKAGE_INFO)