Backward compatibility for dlsym(RTLD_DEFAULT, ...)

 Do not skip RTLD_LOCAL libraries in dlsym(RTLD_DEFAULT, ...)
 if the library is opened by application with target api level <= 22

Bug: http://b/21565766
Bug: http://b/17512583
Change-Id: Ic45ed1e4f53e84cba9d74cab6b0049c0c7aa8423
diff --git a/linker/linker_sdk_versions.cpp b/linker/linker_sdk_versions.cpp
index c73eb38..e9ad3dc 100644
--- a/linker/linker_sdk_versions.cpp
+++ b/linker/linker_sdk_versions.cpp
@@ -15,9 +15,10 @@
  */
 
 #include "linker.h"
+#include <android/api-level.h>
 #include <atomic>
 
-static std::atomic<uint32_t> g_target_sdk_version;
+static std::atomic<uint32_t> g_target_sdk_version(__ANDROID_API__);
 
 void set_application_target_sdk_version(uint32_t target) {
   g_target_sdk_version = target;