Log Message:
spice-protocol: update to 0.14.0.

Major changes in 0.14.0
=======================
* Bumping minor to show that some types and values were removed
* Regenerate enums.h (from spice.proto) which removes:
 * SpicePubkeyType;
 * SpiceTunnelServiceType;
 * SpiceTunnelIpType;
 * SPICE_MSG_TUNNEL_* and SPICE_MSGC_TUNNEL_*
* Add VDAgentGraphicsDeviceInfo message
* Add StreamMsgGraphicsDeviceInfo message
* Add padding to SpiceStat structure