PSA: Upgrade SQLCipher for Android Soon

SQLCipher for Android used to run afoul of Android N���s new rules for
NDK apps. Zetitec just released version 3.5.0
which addresses that problem and makes other improvements as well
(only one .so per platform, smaller size, etc.).

Android N is scheduled to ship in 2016 Q3��� which means somewhere
in the July-September range. While only a tiny percentage of Android
devices will get the Android N upgrade then ��� and an even
tinier percentage will be new Android N devices ��� you still should
plan to upgrade your SQLCipher for Android soon. Otherwise, you
will have a lot of angry Android N users pelting you with nut rolls, Nutella
jars, and no telling what else.