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
Merge pull request #377 from merlink01/master

Changed start code for deamon mode
Merge pull request #378 from fiatflux/ntfs-3g

File permission special case for NTFS-3g on POSIX.
Merge with upstream and fixed conflicts