[PATCH 02 of 16 RFC] blktap3: Introduce blktap3 support for libxl

[Thanos Makatos <thanos.makatos@citrix.com>]

These functions will be implemented at a later patch.

diff -r fef81de66bf7 -r 513739de43b5 tools/libxl/libxl_blktap3.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxl/libxl_blktap3.c	Wed Oct 24 17:24:37 2012 +0100
@@ -0,0 +1,15 @@
+#include "libxl_osdeps.h"
+#include "libxl_internal.h"
+
+int libxl__blktap_enabled(libxl__gc *gc) {
+    return 1;
+}
+
+char *libxl__blktap_devpath(libxl__gc *gc, const char *disk,
+    libxl_disk_format format) {
+    return NULL;
+}
+
+int libxl__device_destroy_tapdisk(libxl__gc *gc, const char *be_path) {
+    return -ENOSYS;
+}