Build: Upgrade to Apache RAT 0.16, scanning hidden directories and adding missing ASF header

.baseline/eclipse/dynamic/dotfile.checkstyle

@@ -1,5 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You 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
 
+         https://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.
+-->
 <fileset-config file-format-version="1.2.0" simple-config="false" sync-formatter="false">
   <local-check-config name="Baseline" location="${configDir}/checkstyle/checkstyle.xml" type="external" description="">
     <additional-data name="protect-config-file" value="false"/>

.github/ISSUE_TEMPLATE/iceberg_bug_report.yml

@@ -1,3 +1,22 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
 ---
 name: Iceberg Bug report 🐞
 description: Problems, bugs and issues with Apache Iceberg

.github/ISSUE_TEMPLATE/iceberg_improvement.yml

@@ -1,3 +1,22 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
 ---
 name: Iceberg Improvement / Feature Request
 description: New features with Apache Iceberg

.github/ISSUE_TEMPLATE/iceberg_question.yml

@@ -1,3 +1,22 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
 ---
 name: Iceberg Question
 description: Questions around Apache Iceberg

dev/.rat-excludes

@@ -7,6 +7,9 @@ books.json
 new-books.json
 build
 .gitignore
+.git
+.gradle
+.idea
 .rat-excludes
 LICENSE
 NOTICE
@@ -24,6 +27,7 @@ gradle/*
 .*\.lock
 .*\.json
 .*\.bin
+.*\.prefs
 package-list
 sitemap.xml
 derby.log

dev/check-license

@@ -58,7 +58,7 @@ else
     declare java_cmd=java
 fi
 
-export RAT_VERSION=0.15
+export RAT_VERSION=0.16
 export rat_jar="$FWDIR"/lib/apache-rat-${RAT_VERSION}.jar
 mkdir -p "$FWDIR"/lib
 
@@ -68,7 +68,7 @@ mkdir -p "$FWDIR"/lib
 }
 
 mkdir -p build
-$java_cmd -jar "$rat_jar" -E "$FWDIR"/dev/.rat-excludes -d "$FWDIR" > build/rat-results.txt
+$java_cmd -jar "$rat_jar" --scan-hidden-directories -E "$FWDIR"/dev/.rat-excludes -d "$FWDIR" > build/rat-results.txt
 
 if [ $? -ne 0 ]; then
    echo "RAT exited abnormally"