qemu-io: Give more --version information

Include the package version information (useful for detecting
builds from git or downstream backports), and the copyright notice.
Signed-off-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NDaniel P. Berrange <berrange@redhat.com>
Acked-by: NKevin Wolf <kwolf@redhat.com>
Message-Id: <20170803163353.19558-3-eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

qemu-io.c

@@ -26,6 +26,7 @@
 #include "block/block_int.h"
 #include "trace/control.h"
 #include "crypto/init.h"
+#include "qemu-version.h"
 
 #define CMD_NOFILE_OK   0x01
 
@@ -522,7 +523,8 @@ int main(int argc, char **argv)
             trace_file = trace_opt_parse(optarg);
             break;
         case 'V':
-            printf("%s version %s\n", progname, QEMU_VERSION);
+            printf("%s version " QEMU_VERSION QEMU_PKGVERSION "\n"
+                   QEMU_COPYRIGHT "\n", progname);
             exit(0);
         case 'h':
             usage(progname);