Add some preloaded classes related files and tools

Added copyright-header to be used by generation scripts to
automatically add a copyright header to preloaded classes.

Add a default blacklist file to avoid needing to manually
remove classes that can't be preloaded in the zygote.

Added a script go generate a preloaded classes list from a raw class
list. This script adds the copyright headers and comments and removes
blacklisted classes.

Bug: 37966211
Test: manually run the scripts

Change-Id: I166f990c41978c80134d2f1e12c1b1079a12752a
diff --git a/config/copyright-header b/config/copyright-header
new file mode 100644
index 0000000..93071cd
--- /dev/null
+++ b/config/copyright-header
@@ -0,0 +1,15 @@
+#
+# Copyright (C) 2017 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.
+#