Add tests for elf unwinding in memory.

Bug: 19517541
Change-Id: Ib42360a82934ff7103e2ccb64c1105c59aa3fdea
diff --git a/libbacktrace/Android.mk b/libbacktrace/Android.mk
index a2b4cfe..be8b803 100644
--- a/libbacktrace/Android.mk
+++ b/libbacktrace/Android.mk
@@ -110,12 +110,14 @@
 backtrace_test_shared_libraries := \
 	libbacktrace_test \
 	libbacktrace \
-
-backtrace_test_shared_libraries_target := \
+	libbase \
 	libcutils \
 
-backtrace_test_static_libraries_host := \
-	libcutils \
+backtrace_test_shared_libraries_target += \
+	libdl \
+
+backtrace_test_ldlibs_host += \
+	-ldl \
 
 module := backtrace_test
 module_tag := debug