Download Gnus-button

[luis fernandes <elf@ee.ryerson.ca>]

This brings up interesting point about updating softwre packages that
do not ship as standard with emacs.

Having just upgraded to 19.34, I also updgraded VM, W3 and AUCTeX. I
had to resort to some tricks (grepping through the el files) to find
the home archives of these packages because I couldn't seem to find
my "locator" file which lists archives sites and their corresponding
packages. 

I think it would be nice to have some sort of functionality
built-into emacs that would allow the upgrading of packages through
emacs (similar to the reporter package for reporting bugs). I
envision A sort of registry that all packages would register with
(when loaded into emacs) and then when the user typed "M-x
upgrade-package", a buffer containing a list of all registered
packages would appear and clicking on it would begin the download of
the latest package.

Is this too far fetched or am I just being lazy?