Most applications store their configuration files below some sort of etc directory within the application's "home place". We should do the same thing given that we have quite a few top level items in our $site_path directory (db, cache, logs, static, etc). Change-Id: Ia38ddab0174433acb59f271e33f32b5061121ea1 Signed-off-by: Shawn O. Pearce <sop@google.com>