Implement enough of X_MS_MediaReceiverRegistrar to support MS stuff.

X-BOX, WMP and such
Make IMediaItem extend ITitleComparable
Update Sqlite
Do not repeatedly warn about cover load failures
Fixup thumbnail generation
Harden SSDP handler a bit
Add Rescan items to notify context menu
Only use core sqlite
Code cleanup
more rescan menu
Version 1.0