Move the intermediate directory for ART boot images.

Free up the directory $(PRODUCT_OUT)/apex/com.android.art for the
release ART APEX. Without this we'll get conflicting install paths in
make.

Test: build/soong/soong_ui.bash --make-mode \
    TARGET_PRODUCT=sdk_x86_64 TARGET_BUILD_VARIANT=userdebug nothing
  with http://r.android.com/q/topic:release-apex-rename+author:mast
  present to rename the ART release APEX to com.android.art.
Test: Build & boot on CF
Test: apct/device_boot_test and asit/perf/boottime_test on
  blueline_jitzygote-userdebug
Test: avd/avd_boot_health_check on cf_x86_phone-userdebug_coverage_art
Bug: 169639321
Change-Id: I0b263d5922d438834e5c804e55f69a2a1421ab73
Merged-In: I0b263d5922d438834e5c804e55f69a2a1421ab73

java/dexpreopt_bootjars_test.go

@@ -87,7 +87,7 @@ func TestDexpreoptBootJars(t *testing.T) {
 	ruleFile := "boot-foo.art"
 
 	expectedInputs := []string{
-		"dex_artjars/android/apex/com.android.art/javalib/arm64/boot.art",
+		"dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art",
 		"dex_bootjars_input/foo.jar",
 		"dex_bootjars_input/bar.jar",
 		"dex_bootjars_input/baz.jar",

java/dexpreopt_config.go

@@ -89,7 +89,7 @@ func genBootImageConfigs(ctx android.PathContext) map[string]*bootImageConfig {
 		frameworkModules := global.BootJars.CopyOf()
 		frameworkModules.RemoveList(artModules)
 
-		artSubdir := "apex/com.android.art/javalib"
+		artSubdir := "apex/art_boot_images/javalib"
 		frameworkSubdir := "system/framework"
 
 		// ART config for the primary boot image in the ART apex.