Bug#663357: direct git repo support

[Osamu Aoki]

Hi,

On Sun, Nov 15, 2015 at 08:58:37AM +0900, Osamu Aoki wrote:
> Hi,
> 
> Considering popularity of the git repo these days, this is nice thing to
> add.  I need to make some trivial merge operation to get the reported
> patch applied to the current source tree.  It will take some time.

It was not really trivial ...

> (There are 52 bugs marked pending in devscripts.  Most of them are uscan
> related bugs.  This is one of the last one to fix.)
> 
> The code base of proposed patch looks reasonable.

But this code gave me a good baseline.  This was good amount of rewrite
but now it works fine.

I am pushing documentation too.

Osamu