Now we have a proper C++ library, use std::unique_ptr.

Also remove the Android.libcxx.mk and other bits of stlport compatibility
mechanics.

Change-Id: Icdf7188ba3c79cdf5617672c1cfd0a68ae596a61
diff --git a/dalvikvm/Android.mk b/dalvikvm/Android.mk
index e7ed9a7..0ded2d8 100644
--- a/dalvikvm/Android.mk
+++ b/dalvikvm/Android.mk
@@ -30,7 +30,7 @@
 LOCAL_MULTILIB := both
 LOCAL_MODULE_STEM_32 := dalvikvm32
 LOCAL_MODULE_STEM_64 := dalvikvm64
-include art/build/Android.libcxx.mk
+include external/libcxx/libcxx.mk
 include $(BUILD_EXECUTABLE)
 
 # create symlink for the primary version target.
@@ -51,7 +51,6 @@
 LOCAL_LDFLAGS := -ldl -lpthread
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_IS_HOST_MODULE := true
-include art/build/Android.libcxx.mk
 include $(BUILD_HOST_EXECUTABLE)
 ART_HOST_EXECUTABLES += $(HOST_OUT_EXECUTABLES)/$(LOCAL_MODULE)
 endif