lib: SPDX License ID on skiplist code

The skiplist code has a very "colorful" history.  Use the SPDX
"LicenseRef" syntax/notation to track it.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/doc/licenses/LicenseRef-Skiplist-BSD-0-Clause b/doc/licenses/LicenseRef-Skiplist-BSD-0-Clause
new file mode 100644
index 0000000000..764f7cc7bd
--- /dev/null
+++ b/doc/licenses/LicenseRef-Skiplist-BSD-0-Clause
@@ -0,0 +1,15 @@
+Redistribution and use in source and binary forms, with or without
+modification, are permitted.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.