Fix Gnome bitcoin: URI handler
README for contrib/debian
Merge pull request #2801 from gavinandresen/urifix

Fixes for bitcoin: URI handling on Linux
Add wtogami to gitian download scripts.
Make the rand tests determinstic. (fixes #2714)

This avoids spurious errors with the old tests but still tests
 enough that if the rng is replaced with a totally broken one
 it should still fail.
Merge pull request #2796 from gmaxwell/remove_overactive_rand_tests

Make the rand tests determinstic.
Merge pull request #2816 from wtogami/gitianwtogami

Add wtogami to gitian download scripts.
Prune provably-unspendable outputs