set ZT_NO_TYPE_PUNNING and -O3 for Android builds

java/jni/Application.mk

@@ -1,5 +1,5 @@
 NDK_TOOLCHAIN_VERSION := clang
 APP_STL := c++_static
-APP_CPPFLAGS := -O0 -fPIC -fPIE -fvectorize -Wall -fstack-protector -fexceptions -fno-strict-aliasing
+APP_CPPFLAGS := -O3 -fPIC -fPIE -fvectorize -Wall -fstack-protector -fexceptions -fno-strict-aliasing -DZT_NO_TYPE_PUNNING=1
 APP_PLATFORM := android-14
 APP_ABI := all