web-commons: add a "best pick" timestamp iterator which can pick either curr or next capture when there is a dupe
(may be combined with base timestamp dedup iterator)
ia-web-commons: using overlays httpclient, necessary for loading malformed arc files without errors
pom: switching back to standard httpclient 3.1 instead of archive-overlay
pom: using standard httpclient 3.1 again
Merge branch 'master' into uuri-handy