sigms's second patch with fix in install rules.

CMakeLists.txt

@@ -1100,8 +1100,8 @@ if(WIN32)
     exec_program(mkdir ARGS "-p \"${CMAKE_BINARY_DIR}/win-install/\"" OUTPUT_VARIABLE RET_VAL)
     configure_file("${CMAKE_CURRENT_SOURCE_DIR}/OpenCVConfig.cmake.in" "${CMAKE_BINARY_DIR}/win-install/OpenCVConfig.cmake" IMMEDIATE @ONLY)
 
-    # Configure the OpenCVConfig.cmake file to have the right paths pointing to the install directory
-    configure_file("${CMAKE_CURRENT_SOURCE_DIR}/OpenCVConfig.cmake.in" "${CMAKE_INSTALL_PREFIX}/OpenCVConfig.cmake" IMMEDIATE @ONLY)
+    #Install the OpenCVConfig.cmake file which has the right paths pointing to the install directory
+    install(FILES "${CMAKE_BINARY_DIR}/win-install/OpenCVConfig.cmake" DESTINATION "${CMAKE_INSTALL_PREFIX}/")
 
     # if videoInput support is enabled (which is by default on WIN32) copy the static library required to the installation path
     # DESTINATION could also be "${CMAKE_INSTALL_PREFIX}/lib") to simplify dev environment setup of client applications