Update to 1.14. Add comment for LICENSEs (two).

* Version 1.14 (released 2009-04-03)

** libidn: Install a libidn-*.def file when building under MinGW.
The file is useful if you develop programs in Visual Studio that links
to libidn.

** tests/tst_toutf8: Don't crash if stringprep_utf8_to_locale returns NULL.
Reported by Dagobert Michelsen <dam@opencsw.org> in
<http://thread.gmane.org/gmane.comp.gnu.libidn.general/192>.

** API and ABI is backwards compatible with the previous version.

(wiz)