btrfs-progs: move and rename super-recover.c cmds/

The file now gets the prefix of the command group.

Signed-off-by: David Sterba <dsterba@suse.com>

Makefile

@@ -138,7 +138,8 @@ objects = ctree.o disk-io.o kernel-lib/radix-tree.o extent-tree.o print-tree.o \
 cmds_objects = cmds-subvolume.o cmds-filesystem.o cmds-device.o cmds-scrub.o \
 	       cmds-inspect.o cmds-balance.o cmds-send.o cmds-receive.o \
 	       cmds/quota.o cmds/qgroup.o cmds-replace.o check/main.o \
-	       cmds-restore.o cmds/rescue.o cmds/rescue-chunk-recover.o super-recover.o \
+	       cmds-restore.o cmds/rescue.o cmds/rescue-chunk-recover.o \
+	       cmds/rescue-super-recover.o \
 	       cmds/property.o cmds-fi-usage.o cmds-inspect-dump-tree.o \
 	       cmds-inspect-dump-super.o cmds-inspect-tree-stats.o cmds-fi-du.o \
 	       mkfs/common.o check/mode-common.o check/mode-lowmem.o