Add notice files.

Bug: http://b/27951762
Change-Id: I2f3b36f971a7331df5288f4b542186bc802022ab
diff --git a/MODULE_LICENSE_GPL b/MODULE_LICENSE_GPL
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/MODULE_LICENSE_GPL
diff --git a/NOTICE b/NOTICE
new file mode 120000
index 0000000..d24842f
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1 @@
+COPYING
\ No newline at end of file
diff --git a/README.version b/README.version
new file mode 100644
index 0000000..557ee73
--- /dev/null
+++ b/README.version
@@ -0,0 +1,4 @@
+URL: http://git.tukaani.org/xz.git
+Version: 9815cdf6987ef91a85493bfcfd1ce2aaf3b47a0a
+BugComponent: 119452
+Owners: jmgao