Add some missing copyright headers

All of these were authored by me, and first appeared in the year
mentioned, based upon git blame output, and my own memory of what
I have accomplished in the past year.

Signed-off-by: Shawn O. Pearce <sop@google.com>

Documentation/Makefile

@@ -1,3 +1,17 @@
+# Copyright (C) 2009 The Android Open Source Project
+#
+# 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.
+#
 DOC_HTML       = $(patsubst %.txt,%.html,$(wildcard *.txt))
 ASCIIDOC       = asciidoc
 ASCIIDOC_EXTRA =

src/main/java/com/google/gerrit/Gerrit.gwt.xml

@@ -1,3 +1,18 @@
+<!--
+ Copyright (C) 2008 The Android Open Source Project
+
+ 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.
+-->
 <module>
   <inherits name='com.google.gwt.user.User'/>
   <inherits name='com.google.gwtjsonrpc.GWTJSONRPC'/>

src/main/java/com/google/gerrit/UserAgent.gwt.xml

@@ -1,3 +1,18 @@
+<!--
+ Copyright (C) 2009 The Android Open Source Project
+
+ 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.
+-->
 <module>
   <replace-with class="com.google.gerrit.client.ui.FancyFlexTableImplIE6">
     <when-type-is class="com.google.gerrit.client.ui.FancyFlexTableImpl" />

src/main/java/log4j.properties

@@ -1,3 +1,17 @@
+# Copyright (C) 2008 The Android Open Source Project
+#
+# 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.
+#
 log4j.rootCategory=DEBUG, stderr
 log4j.appender.stderr=org.apache.log4j.ConsoleAppender
 log4j.appender.stderr.target=System.err