Fill out the AUTHORS file with some content

The AUTHORS file is empty, fill it in with a list of present and
past maintainers, and email addresses of all people who have
contributed patches

AUTHORS

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+          Spice Authors
+          =============
+
+The current active Spice maintainers are
+
+    Alon Levy <alevy@redhat.com>
+    Christophe Fergeau <cfergeau@redhat.com>
+    Gerd Hoffmann <kraxel@redhat.com>
+    Marc-André Lureau <marcandre.lureau@redhat.com>
+    Uri Lublin <uril@redhat.com>
+    Yonit Halperin <yhalperi@redhat.com>
+
+Previous Spice maintainers were
+
+    Izik Eidus <ieidus@redhat.com>
+    Yaniv Kamay <ykamay@redhat.com> (Original project author)
+
+Patches also contributed by
+
+    Alexander Larsson <alexl@redhat.com>
+    Arnon Gilboa <agilboa@redhat.com>
+    Daniel P. Berrange <berrange@redhat.com>
+    Dan Kenigsberg <danken@redhat.com>
+    Gal Hammer <ghammer@redhat.com>
+    Hans de Goede <hdegoede@redhat.com>
+    Jürg Billeter <j@bitron.ch>
+    Liang Guo <bluestonechina@gmail.com>
+    Søren Sandmann Pedersen <ssp@redhat.com>
+    Thomas Tyminski <thomast@cs.tu-berlin.de>
+    Tiziano Mueller <dev-zero@gentoo.org>
+    Zeeshan Ali (Khattak) <zeeshanak@gnome.org>
+
+   ....send patches to get your name here...