Win installer: provide a pretty icon

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204960 91177308-0d34-0410-b5e6-96231b3b80d8

CMakeLists.txt

@@ -67,6 +67,8 @@ set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.TXT")
 if(WIN32 AND NOT UNIX)
   set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "LLVM")
   set(CPACK_PACKAGE_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_logo.bmp")
+  set(CPACK_NSIS_MUI_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
+  set(CPACK_NSIS_MUI_UNIICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
   set(CPACK_NSIS_MODIFY_PATH "ON")
   set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL "ON")
   set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS