2.18.1 (stable):

* Many windows build improvements
* Bugs fixed:
  * 506410 - Call of overloaded Stringify is ambiguous
  * 529496 - Gio::Error::HOST_NOT_FOUND clashes with a netdb.h #define
  * 539891 - Can't use doxygen commands in *_override.xml
  * 555576 - name clash in fileinfo.h with winbase.h from VS2005
  * 556315 - Extra defs generation utility forgets to generate signals for inter...
  * 556387 - FileEnumerator::next_file reference counting problems
* Thanks to contributions from Armin Burgmeier, Jonathon Jongsma, José
  Alburquerque, Murray Cumming, and Szilárd Pfeiffer