More work on Disk Voyager
New Features:
- loading icons in background (supports huge listings such as whole drive)
- inactive panel dim
- display entry full path when directory is expanded
Code Improvements:
- better thread support (thread priorities, more generic, not constrained to single work queue, using thread pools)
- switch arenas to use 64 bit virtual space (32bit support -> Recycle bin)
- using UTF8 in non-platform layer, converting to wchars in win layer
- support for direct NTFS sectors read