Several changes:
1) Fix a bug where sending a book could use the wrong path.
2) Ask Calibre Companion to show a message if it is out of date. This will work only for newer versions of CC.
3) Remove old non-streaming networking code. Refuse to connect if a client requests to use the old code. This should happen only for pirated versions of CC.
Merge branch 'kovidgoyal/master'
Wireless driver: Remove old non-streaming netowrking code. Apps that still use it must be updated. A message will popup notifying the user of the need to update if such an app is encountered.

Wireless driver: Fix a bug that could cause the wrong path information to be sent to the device in some circumstances.

Merge branch 'master' of https://github.com/cbhaley/calibre