ART: Use non-stripped core jars in gtests

To support emulators and other preopted device configurations, use
a special core-libart and core-oj version that will never be stripped.

Bug: 24535627
Change-Id: Ie632bc382bbc753e9c100039f2ecc4ac1f2ab249
diff --git a/build/Android.gtest.mk b/build/Android.gtest.mk
index 99f7a2a..3d16c49 100644
--- a/build/Android.gtest.mk
+++ b/build/Android.gtest.mk
@@ -442,8 +442,8 @@
     $$(ART_TARGET_NATIVETEST_OUT)/$$(TARGET_$(2)ARCH)/$(1) \
     $$($(2)TARGET_OUT_SHARED_LIBRARIES)/libjavacore.so \
     $$($(2)TARGET_OUT_SHARED_LIBRARIES)/libopenjdk.so \
-    $$(TARGET_OUT_JAVA_LIBRARIES)/core-libart.jar \
-    $$(TARGET_OUT_JAVA_LIBRARIES)/core-oj.jar
+    $$(TARGET_OUT_JAVA_LIBRARIES)/core-libart-testdex.jar \
+    $$(TARGET_OUT_JAVA_LIBRARIES)/core-oj-testdex.jar
 
 .PHONY: $$(gtest_rule)
 $$(gtest_rule): test-art-target-sync