[PATCH] explorer: Add parsing '/cd' arg in explorer commandline

[Zhipeng Zhao]

The '/cd,'  looks like not a valid arg, I think explorer(win) use the comma to distinguish arg and object, I will testing more.
At 2020-03-27 15:15:54, "Zhiyi Zhang" <zzhang at codeweavers.com> wrote:
>I sent a new version of your patch.
>
>On 3/27/20 1:56 PM, Zhiyi Zhang wrote:
>> You should send a v3. '/cd,' looks like the same behavior with '/root,'
>>
>> On 3/27/20 1:50 PM, Zhipeng Zhao wrote:
>>> Sorry, it's snet by mistake, I do not know how to recall.
>>> At 2020-03-27 13:24:12, "Zhipeng Zhao" <near2see at 163.com> wrote:
>>