move bdev_specs struct into lxccontainer.h to allow API users to use it

src/lxc/bdev.h

@@ -34,23 +34,6 @@
 
 struct bdev;
 
-/*
- * specifications for how to create a new backing store
- */
-struct bdev_specs {
-	char *fstype;
-	uint64_t fssize;  // fs size in bytes
-	struct {
-		char *zfsroot;
-	} zfs;
-	struct {
-		char *vg;
-		char *lv;
-		char *thinpool; // lvm thin pool to use, if any
-	} lvm;
-	char *dir;
-};
-
 struct bdev_ops {
 	/* detect whether path is of this bdev type */
 	int (*detect)(const char *path);

src/lxc/lxccontainer.h

@@ -758,6 +758,24 @@ struct lxc_snapshot {
 	void (*free)(struct lxc_snapshot *s);
 };
 
+
+/*!
+ * \brief Specifications for how to create a new backing store
+ */
+struct bdev_specs {
+    char *fstype; /*!< Filesystem type */
+    uint64_t fssize;  /*!< Filesystem size in bytes */
+    struct {
+        char *zfsroot; /*!< ZFS root path */
+    } zfs;
+    struct {
+        char *vg; /*!< LVM Volume Group name */
+        char *lv; /*!< LVM Logical Volume name */
+        char *thinpool; /*!< LVM thin pool to use, if any */
+    } lvm;
+    char *dir; /*!< Directory path */
+};
+
 /*!
  * \brief Create a new container.
  *