Bundle all of our necessary static libraries in libRScpp_static.a.

This increases the size from ~1.3MB to ~7.8MB for ARM, but it ensures that
the resulting .a file works properly without additional linker parameters.

Change-Id: Ica9beed8c535f2f1151ccff1853d955241560a34
diff --git a/cpp/Android.mk b/cpp/Android.mk
index 9ed02fb..09bd2a2 100644
--- a/cpp/Android.mk
+++ b/cpp/Android.mk
@@ -56,7 +56,7 @@
 
 LOCAL_SRC_FILES += ../rsCompatibilityLib.cpp
 
-LOCAL_STATIC_LIBRARIES := \
+LOCAL_WHOLE_STATIC_LIBRARIES := \
 	libz \
 	libutils \
 	liblog \