Account for `LOCAL_NDK_VERSION` when packaging.

Previously an app built with `LOCAL_NDK_VERSION := r10` would still
be packaged with r11's library.

Test: make checkbuild
Change-Id: I1dcbd65057adaa1af605b9770283f7da994fc3cf
diff --git a/core/install_jni_libs_internal.mk b/core/install_jni_libs_internal.mk
index 6136968..9f5d445 100644
--- a/core/install_jni_libs_internal.mk
+++ b/core/install_jni_libs_internal.mk
@@ -32,10 +32,10 @@
 endif
 ifeq (stlport_shared,$(LOCAL_NDK_STL_VARIANT))
 my_jni_shared_libraries += \
-    $(HISTORICAL_NDK_VERSIONS_ROOT)/current/sources/cxx-stl/stlport/libs/$(TARGET_$(my_2nd_arch_prefix)CPU_ABI)/libstlport_shared.so
+    $(HISTORICAL_NDK_VERSIONS_ROOT)/$(LOCAL_NDK_VERSION)/sources/cxx-stl/stlport/libs/$(TARGET_$(my_2nd_arch_prefix)CPU_ABI)/libstlport_shared.so
 else ifeq (c++_shared,$(LOCAL_NDK_STL_VARIANT))
 my_jni_shared_libraries += \
-    $(HISTORICAL_NDK_VERSIONS_ROOT)/current/sources/cxx-stl/llvm-libc++/libs/$(TARGET_$(my_2nd_arch_prefix)CPU_ABI)/libc++_shared.so
+    $(HISTORICAL_NDK_VERSIONS_ROOT)/$(LOCAL_NDK_VERSION)/sources/cxx-stl/llvm-libc++/libs/$(TARGET_$(my_2nd_arch_prefix)CPU_ABI)/libc++_shared.so
 endif
 
 # Set the abi directory used by the local JNI shared libraries.