Merge pull request #161 from Atheros1/master

New tray icon, also use existing local-IP rejection function for received addr messages
Merge pull request #163 from Atheros1/master

Added new deterministic address and subscription-related commands
Merge pull request #166 from Atheros1/master

Use tray icons stored in bitmessage_icons_rc.py
Merge pull request #175 from Atheros1/master

Added menu option to delete all trashed messages
Moved proof of work to child processes.
Fixed double PoW on pubkey messages.
Consistent use of i as an iterator.
Merge http://github.com/Arceliar/PyBitmessage into Arceliar
Multi-core POW
Multi-core POW
Multi-core POW