Use fast PoW unless we're explicitly a frozen (binary) version of the code
Actually OSX app maded with py2app can parallelize just fine
Allow specification of alternate settings dir via BITMESSAGE_HOME
Merge branch 'master' into Fast_PoW_unless_frozen
Merge pull request #461 from Atheros1/master

Use fast POW unless frozen
resolve merge conflict
Merge pull request #462 from Atheros1/master

Allow specification of alternate settings dir via BITMESSAGE_HOME
Merge remote-tracking branch 'upstream/master' into sql_refactor