message: Export targets from build directory
  This will allow projects to use pugixml from its build directory
  rather than having to install it.
diff: @@ -174,6 +174,9 @@ install(EXPORT pugixml-targets
  NAMESPACE pugixml::
  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/pugixml COMPONENT ${PUGIXML_DEVELOPMENT_COMPONENT})
  +export(EXPORT pugixml-targets
  + NAMESPACE pugixml::)
  +
  install(FILES
  "${PROJECT_BINARY_DIR}/pugixml-config-version.cmake"
  "${PROJECT_BINARY_DIR}/pugixml-config.cmake"
  