Rename resource_dirs to java_resource_dirs

Java vs. Android resource directories are already confusing enough,
rename resource_dirs to java_resource_dirs to make room for
android_resource_dirs.

Change-Id: Iffd087860b98df29e81d8d2f823be87c8227e614
diff --git a/java/java.go b/java/java.go
index 533cabb..215924b 100644
--- a/java/java.go
+++ b/java/java.go
@@ -55,8 +55,8 @@
 		// or .aidl files.
 		Srcs []string `android:"arch_variant,arch_subtract"`
 
-		// resource_dirs: list of directories containing resources
-		Resource_dirs []string `android:"arch_variant"`
+		// java_resource_dirs: list of directories containing Java resources
+		Java_resource_dirs []string `android:"arch_variant"`
 
 		// no_standard_libraries: don't build against the default libraries (core-libart, core-junit,
 		// ext, and framework for device targets)
@@ -279,7 +279,8 @@
 		classJarSpecs = append([]jarSpec{classes}, classJarSpecs...)
 	}
 
-	resourceJarSpecs = append(ResourceDirsToJarSpecs(ctx, j.properties.Resource_dirs), resourceJarSpecs...)
+	resourceJarSpecs = append(ResourceDirsToJarSpecs(ctx, j.properties.Java_resource_dirs),
+		resourceJarSpecs...)
 
 	manifest := j.properties.Manifest
 	if manifest != "" {