terminal: don't use env variable to give a name to GTK terminal

GTK applications accept `--name` as a special parameter just for that.

lib/quake.lua

@@ -71,8 +71,7 @@ function QuakeConsole:display()
 
    if not client then
       -- The client does not exist, we spawn it
-      awful.util.spawn("env RESOURCE_NAME=" .. self.name .. " " ..
-                       self.terminal .. " " .. string.format(self.argname, self.name),
+      awful.util.spawn(self.terminal .. " " .. string.format(self.argname, self.name),
 		       false, self.screen)
       return
    end

rc/quake.lua

@@ -3,7 +3,7 @@ local quake = loadrc("quake", "vbe/quake")
 local quakeconsole = {}
 for s = 1, screen.count() do
    quakeconsole[s] = quake({ terminal = config.terminal,
-                             argname = " ",
+                             argname = "--name %s",
 			     height = 0.3,
 			     screen = s })
 end