fix for bug 64489 - make Esc close the Page Info window/dialog

code by jonasj@jonasj.dk, r=db48x@yahoo.com, sr=alecf@netscape.com, a=asa

suite/browser/pageInfo.xul

@@ -50,6 +50,7 @@
 
   <keyset>
     <key id="closeWindow" key="&closeWindow;" modifiers="accel" oncommand="window.close()"/>
+    <key keycode="VK_ESCAPE" oncommand="window.close()"/>
   </keyset>
   <!-- keys are appended from the overlay -->
   <keyset id="dialogKeys"/>