File permission special case for NTFS-3g on POSIX.

Fix issue #347, "*SensitiveFilePermissions fails on ntfs-3g mounted filesystems".
Changed start code for deamon mode
Added deamon modoe to main function
Created Object for controlling bitmessage deamon
Minor spelling error: 'deamon' -> 'daemon'
Merge with upstream master
Merge branch 'daemon_spelling_error' of git://github.com/DivineOmega/PyBitmessage into DivineOmega-daemon_spelling_error
Merge branch 'master' of github.com:Bitmessage/PyBitmessage