修复路径过长程序报错的问题
Merge remote-tracking branch 'origin/demo' into demo

Conflicts:
	src/net/listener/FolderMonitor.java
	src/net/listener/FolderPathMonitor.java
	src/net/ui/ConfirmGui.java
	src/net/ui/MainGui.java
	src/net/util/SendFolder.java