Add GPLv2 as an alternative license.

Summary: Closes https://github.com/facebook/rocksdb/pull/2226

Differential Revision: D4967547

Pulled By: siying

fbshipit-source-id: dd3b58ae1e7a106ab6bb6f37ab5c88575b125ab4

8 files changed, 16 insertions, 0 deletions

diff --git a/cache/cache_bench.cc b/cache/cache_bench.cc
index 905d6bdd6..fda11b869 100644
--- a/cache/cache_bench.cc
+++ b/cache/cache_bench.cc
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 
 #ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS
diff --git a/cache/cache_test.cc b/cache/cache_test.cc
index d59939cc2..271cb0e6d 100644
--- a/cache/cache_test.cc
+++ b/cache/cache_test.cc
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
diff --git a/cache/clock_cache.cc b/cache/clock_cache.cc
index 03396c016..afcf6345c 100644
--- a/cache/clock_cache.cc
+++ b/cache/clock_cache.cc
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
diff --git a/cache/lru_cache.cc b/cache/lru_cache.cc
index bd09cb26f..4751c0b13 100644
--- a/cache/lru_cache.cc
+++ b/cache/lru_cache.cc
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
diff --git a/cache/lru_cache.h b/cache/lru_cache.h
index c12adb9f5..28f87193e 100644
--- a/cache/lru_cache.h
+++ b/cache/lru_cache.h
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
diff --git a/cache/lru_cache_test.cc b/cache/lru_cache_test.cc
index 038ac1eaf..d7e661a12 100644
--- a/cache/lru_cache_test.cc
+++ b/cache/lru_cache_test.cc
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 
 #include "cache/lru_cache.h"
 
diff --git a/cache/sharded_cache.cc b/cache/sharded_cache.cc
index 3b7d0bb0a..81e7122e4 100644
--- a/cache/sharded_cache.cc
+++ b/cache/sharded_cache.cc
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
diff --git a/cache/sharded_cache.h b/cache/sharded_cache.h
index 1f9efd7ce..c2d52c840 100644
--- a/cache/sharded_cache.h
+++ b/cache/sharded_cache.h
@@ -2,6 +2,8 @@
 //  This source code is licensed under the BSD-style license found in the
 //  LICENSE file in the root directory of this source tree. An additional grant
 //  of patent rights can be found in the PATENTS file in the same directory.
+//  This source code is also licensed under the GPLv2 license found in the
+//  COPYING file in the root directory of this source tree.
 //
 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be