cygport improvements: upload, fish, src_prep_fini_hook

[Andrew Schulman]

> On 2014-10-19 09:13, Andrew Schulman wrote:
> > I've published several improvements to cygport on Github.  Each improvement
> > is in its own branch:
> >
> > upload
> >    Adds the "upload" command: upload finished packages to cygwin.com.
> 
> I definitely want to add this feature.  However, the implementation is 
> overly complicated; only one upload client need be supported, which 
> should then be added to requires:.  (Yes, I'm aware that downloading 
> handles wget or curl, but that is legacy code and the same should apply 
> there.)  The pkg_name for loops are also incorrect wrt subpackages.

Both fixed in the upload branch.