Add copyright notices to the mvel files (#162)

src/build/gen_sources.mvel

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2020 Adrien Grand and the lz4-java contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 import java.io.*;
 import java.util.*;
 import org.mvel2.templates.*;

src/build/source_templates/compress.template

@@ -1,3 +1,18 @@
+@comment{
+  Copyright 2020 Adrien Grand and the lz4-java contributors.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+}
   static int compress64k(${storage} src, int srcOff, int srcLen, ${storage} dest, int destOff, int destEnd) {
     final int srcEnd = srcOff + srcLen;
     final int srcLimit = srcEnd - LAST_LITERALS;

src/build/source_templates/compress_hc.template

@@ -1,3 +1,18 @@
+@comment{
+  Copyright 2020 Adrien Grand and the lz4-java contributors.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+}
   @Override
   public int compress(${storage} src, int srcOff, int srcLen, ${storage} dest, int destOff, int maxDestLen) {
 @if{ storage == "ByteBuffer"}

src/build/source_templates/decompress.template

@@ -1,3 +1,18 @@
+@comment{
+  Copyright 2020 Adrien Grand and the lz4-java contributors.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+}
   @Override
   public int decompress(${storage} src, final int srcOff@if{ size == "Safe" }, final int srcLen @end{}, ${storage} dest, final int destOff, int destLen) {
 @if{ storage == "ByteBuffer"}

src/build/source_templates/hashtable.template

@@ -1,3 +1,18 @@
+@comment{
+  Copyright 2020 Adrien Grand and the lz4-java contributors.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+}
   private class HashTable {
     static final int MASK = MAX_DISTANCE - 1;
     int nextToUpdate;

src/build/source_templates/xxhash32_hash.template

@@ -1,3 +1,18 @@
+@comment{
+  Copyright 2020 Adrien Grand and the lz4-java contributors.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+}
   @Override
   public int hash(${storage} buf, int off, int len, int seed) {
 @if{storage == "ByteBuffer"}

src/build/source_templates/xxhash64_hash.template

@@ -1,3 +1,18 @@
+@comment{
+  Copyright 2020 Adrien Grand and the lz4-java contributors.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+}
   @Override
   public long hash(${storage} buf, int off, int len, long seed) {
 @if{storage == "ByteBuffer"}