tar: tar xf foo.tar dir/dir did not extract all subdirs.
Added testsuite entry for this
diff --git a/testsuite/tar/tar-extracts-all-subdirs b/testsuite/tar/tar-extracts-all-subdirs
new file mode 100644
index 0000000..886c37c
--- /dev/null
+++ b/testsuite/tar/tar-extracts-all-subdirs
@@ -0,0 +1,12 @@
+# FEATURE: CONFIG_FEATURE_TAR_CREATE
+mkdir -p foo/{1,2,3}
+mkdir -p foo/1/{10,11}
+mkdir -p foo/1/10/{100,101,102}
+tar cf foo.tar -C foo .
+rm -rf foo/*
+busybox tar xf foo.tar -C foo ./1/10
+find foo | sort >logfile.bb
+rm -rf foo/*
+tar xf foo.tar -C foo ./1/10
+find foo | sort >logfile.gnu
+cmp logfile.gnu logfile.bb