gtk-sato-engine: Fix the metadata

Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>

meta/packages/gtk-engines/gtk-sato-engine.inc

@@ -1,6 +1,10 @@
 DESCRIPTION = "Sato theme engine for GTK"
+HOMEPAGE = "http://www.o-hand.com"
+BUGTRACKER = "http://bugzilla.openedhand.com/"
+
+LICENSE = "LGPLv2+"
+
 SECTION = "x11/base"
-LICENSE = "LGPL"
 DEPENDS = "gtk+"
 RDEPENDS_gtk-theme-sato = "gtk-sato-engine"