Stop garbage collection while saving, this might avoid a nasty crash

git-svn-id: http://svn.net-core.org/repos/t-engine4@1169 51575b47-30f0-44d4-a5cc-537603b46e54

game/engines/default/engine/SavefilePipe.lua

@@ -68,6 +68,8 @@ end
 -- Do not call this, this is automatic!
 function _M:doThread()
 	self.saving = true
+	collectgarbage("collect")
+	collectgarbage("stop")
 	if game:getPlayer() then game:getPlayer().changed = true end
 	while #self.pipe > 0 do
 		local p = self.pipe[1]
@@ -83,6 +85,7 @@ function _M:doThread()
 		table.remove(self.pipe, 1)
 	end
 	if game.log then game.log("Saving done.") end
+	collectgarbage("restart")
 	self.saving = false
 	if game:getPlayer() then game:getPlayer().changed = true end
 end