*: update licenses

Part of: REL-932
Release note: None

LICENSE

@@ -1,10 +1,5 @@
 Source code in this repository is variously licensed under the Business Source
-License 1.1 (BSL), the CockroachDB Community License (CCL), the MIT license, and
-BSD-style licenses. A copy of each license can be found in the licenses
-directory. Source code in a given file is licensed under the BSL and the
-copyright belongs to The Cockroach Authors unless otherwise noted at the
-beginning of the file.
-
-Running `make` will produce a binary that includes CCL-licensed code and is thus
-subject to the terms of the CCL. To produce a binary that is free of CCL-
-licensed code, run `make buildoss`.
+License 1.1 (BSL), the CockroachDB Community License (CCL), the MIT license,
+BSD-style licenses, and other licenses specified in the source code. Source
+code in a given file is licensed under the BSL and the copyright belongs to The
+Cockroach Authors unless otherwise noted at the beginning of the file.

licenses/LICENSE.txt

@@ -0,0 +1,12 @@
+CockroachDB is variously licensed under the Business Source License 1.1 (BSL)
+and/or the CockroachDB Community License (CCL). You can see which license
+applies to the various CockroachDB features on this page:
+https://www.cockroachlabs.com/docs/stable/licensing-faqs#feature-licensing. The
+default license for anything not listed is the CCL.
+
+The CockroachDB Community License is available at
+https://www.cockroachlabs.com/cockroachdb-community-license/.
+
+You can find the applicable Business Source License by reviewing the BSL
+license in the Licenses folder for the applicable version of CockroachDB at
+https://github.com/cockroachdb/cockroach.