awesomerc: only uses placement when no hints (FS#637)

Signed-off-by: Julien Danjou <julien@danjou.info>

awesomerc.lua.in

@@ -318,9 +318,11 @@ client.add_signal("manage", function (c, startup)
         -- i.e. put it at the end of others instead of setting it master.
         -- awful.client.setslave(c)
 
-        -- Put windows in a smart way.
-        awful.placement.no_overlap(c)
-        awful.placement.no_offscreen(c)
+        -- Put windows in a smart way, only if they does not set an initial position.
+        if not c.size_hints.user_position and not c.size_hints.program_position then
+            awful.placement.no_overlap(c)
+            awful.placement.no_offscreen(c)
+        end
     end
 end)