Raise progaurd library to platform libraries even for "current" SDK.

Without this change, if an app with "LOCAL_SDK_VERSION := current" links
against a static library that uses removed APIs, the app will fail
ProGuard processing because the removed APIs can't be found in the
current SDK. This works around the issue.

Bug: 18510449
Bug: 20667396
Change-Id: Ia6e2a81cf5ecba972d155e56238ea946f8539411
diff --git a/core/java.mk b/core/java.mk
index ae4a602..b371289 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -441,9 +441,10 @@
 my_support_library_sdk_raise :=
 ifneq (,$(filter android-support-%,$(LOCAL_STATIC_JAVA_LIBRARIES)))
 ifdef LOCAL_SDK_VERSION
-ifeq (,$(filter current system_current, $(LOCAL_SDK_VERSION)))
 ifdef TARGET_BUILD_APPS
+ifeq (,$(filter current system_current, $(LOCAL_SDK_VERSION)))
   my_support_library_sdk_raise := $(call java-lib-files, sdk_vcurrent)
+endif
 else
   # For platform build, we can't just raise to the "current" SDK,
   # that would break apps that use APIs removed from the current SDK.
@@ -451,7 +452,6 @@
 endif
 endif
 endif
-endif
 
 # jack already has the libraries in its classpath and doesn't support jars
 legacy_proguard_flags := $(addprefix -libraryjars ,$(my_support_library_sdk_raise) $(full_shared_java_libs))