This commit adds four initial developer reports that are hopefully
useful to developers and packages in checking up on the state of things.
They include:

* big : the 100 biggest packages in the repos
* old : packages built > 2 years ago
* uncompressed-man : self-explanatory
* uncompressed-info : self-explanatory

There should obviously be some sort of index page to access all of
these, so that will be coming soon.

Signed-off-by: Dan McGee <dan@archlinux.org>