* Merge from Debian testing (lp: #503064, #477818). Remaining changes: - Add 'debian/patches/50_disable_mlock_test.dpatch': Disable mlock() test since it fails with ulimit 0 (on buildds). - Add 'debian/patches/61_use_agent_default.dpatch': Patch to set gpg (or gpg2) and gpgsm to use a passphrase agent by default (lp: 15485) - Fix udeb build failure on powerpc, building with -O2 instead of -Os.