[asan] Add --enable-new-dtags in tests on Android.

The dynamic loader does not accept DT_RPATH; it wants DT_RUNPATH.

This is a temporary fix until D38430 lands.

llvm-svn: 315020

compiler-rt/test/lit.common.cfg

@@ -55,7 +55,7 @@ config.available_features.add(compiler_id)
 # BFD linker in 64-bit android toolchains fails to find libm.so, which is a
 # transitive shared library dependency (via asan runtime).
 if config.android:
-  config.target_cflags += " -lm"
+  config.target_cflags += " -lm -Wl,--enable-new-dtags"
 
 # Clear some environment variables that might affect Clang.
 possibly_dangerous_env_vars = ['ASAN_OPTIONS', 'DFSAN_OPTIONS', 'LSAN_OPTIONS',