message: Fixed CMakeList.txt to build with no .git
diff: @@ -560,6 +560,4 @@ IF(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git/")
  ELSE()
  MESSAGE(FATAL_ERROR "Creating pre-commit hook failed: ${retcode}")
  ENDIF()
  -ELSE()
  - MESSAGE(FATAL_ERROR "Currently, we don't support downloaded source code.\nPlease using git clone it and rebuild.")
  ENDIF()
  