Support java libraries, binaries, and prebuilts

Add support for compiling java libraries (.jar files with
or without .dex), java binaries (.jar files with a wrapper
script to run them), and java prebuilts (for the SDK .jars)

Change-Id: Id624da64c92cf20c6d9577c6bb06e5b212af0d1b

common/module.go

@@ -107,8 +107,9 @@ type hostAndDeviceProperties struct {
 type Multilib string
 
 const (
-	MultilibBoth  Multilib = "both"
-	MultilibFirst Multilib = "first"
+	MultilibBoth   Multilib = "both"
+	MultilibFirst  Multilib = "first"
+	MultilibCommon Multilib = "common"
 )
 
 func InitAndroidModule(m AndroidModule,