Add public resource definitions for the appcompat library

This CL adds public resources file declarations for the appcompat
library, and builds the library with version 1.3.x of the Gradle
plugin which will extract the public definitions into the AAR
for use by the tools.

Change-Id: Ibb4b420c449c0fecda7d3edb00b3a0859f44b20c
diff --git a/v7/appcompat/build.gradle b/v7/appcompat/build.gradle
index bbb2fd1..6313298 100644
--- a/v7/appcompat/build.gradle
+++ b/v7/appcompat/build.gradle
@@ -12,7 +12,7 @@
     sourceSets {
         main.manifest.srcFile 'AndroidManifest.xml'
         main.java.srcDir 'src'
-        main.res.srcDir 'res'
+        main.res.srcDirs 'res', 'res-public'
         main.assets.srcDir 'assets'
         main.resources.srcDir 'src'