部分实现索引过程中的目录遍历。

Signed-off-by: Yue Li <liyue80@gmail.com>
用MergeDirectory函数代替CompareDirectory。
添加注释

Signed-off-by: Yue Li <liyue80@gmail.com>
添加全局的 Operation List ，用于保存需要进行的文件操作。

Signed-off-by: yue.li <yue.li@cn.promise.com>
Merge branch 'master' of https://gitlab.com/yue.li/cryptsynctool

Conflicts:
	CryptSyncTool/CryptSyncThread.cpp
Merge branch 'master' of https://gitlab.com/yue.li/cryptsynctool

Signed-off-by: yue.li <yue.li@cn.promise.com>