ui/spice: Require spice-protocol >= 0.14.0

Version 0.14.0 is now old enough to have made it into the major
distributions:

   Debian 11: 0.14.3
   RHEL-8: 0.14.2
   FreeBSD (ports): 0.14.4
   Fedora 35: 0.14.0
   Ubuntu 20.04: 0.14.0
   OpenSUSE Leap 15.3: 0.14.3

Requiring it lets us drop two version checks in ui/vdagent.c.  It also
enables the next commit.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230109190321.1056914-4-armbru@redhat.com>

meson.build

@@ -742,7 +742,7 @@ endif
 
 spice_protocol = not_found
 if not get_option('spice_protocol').auto() or have_system
-  spice_protocol = dependency('spice-protocol', version: '>=0.12.3',
+  spice_protocol = dependency('spice-protocol', version: '>=0.14.0',
                               required: get_option('spice_protocol'),
                               method: 'pkg-config', kwargs: static_kwargs)
 endif

ui/vdagent.c

@@ -87,9 +87,7 @@ static const char *cap_name[] = {
     [VD_AGENT_CAP_MONITORS_CONFIG_POSITION]       = "monitors-config-position",
     [VD_AGENT_CAP_FILE_XFER_DISABLED]             = "file-xfer-disabled",
     [VD_AGENT_CAP_FILE_XFER_DETAILED_ERRORS]      = "file-xfer-detailed-errors",
-#if CHECK_SPICE_PROTOCOL_VERSION(0, 14, 0)
     [VD_AGENT_CAP_GRAPHICS_DEVICE_INFO]           = "graphics-device-info",
-#endif
 #if CHECK_SPICE_PROTOCOL_VERSION(0, 14, 1)
     [VD_AGENT_CAP_CLIPBOARD_NO_RELEASE_ON_REGRAB] = "clipboard-no-release-on-regrab",
     [VD_AGENT_CAP_CLIPBOARD_GRAB_SERIAL]          = "clipboard-grab-serial",
@@ -112,9 +110,7 @@ static const char *msg_name[] = {
     [VD_AGENT_CLIENT_DISCONNECTED]   = "client-disconnected",
     [VD_AGENT_MAX_CLIPBOARD]         = "max-clipboard",
     [VD_AGENT_AUDIO_VOLUME_SYNC]     = "audio-volume-sync",
-#if CHECK_SPICE_PROTOCOL_VERSION(0, 14, 0)
     [VD_AGENT_GRAPHICS_DEVICE_INFO]  = "graphics-device-info",
-#endif
 };
 
 static const char *sel_name[] = {