sqlite: upgrade to SQLite 3.16.0

Downloaded from https://www.sqlite.org/2017/sqlite-amalgamation-3160000.zip

    $ sha256sum sqlite-amalgamation-3160000.zip
    3b5dfb65807e2b17e6463357df848e322badba01dc9a4a1de8fdbb72d448e3b0  sqlite-amalgamation-3160000.zip

dist/orig contains the stock sqlite3 code, as packaged in the ZIP file above.

dist contains a copy of dist/orig, but with the Android.patch file applied.
Please see Android.patch for a list of differences between stock and
Android.

The Android specific patch applied cleanly and was regenerated.

This major release contains new features, a few bug fixes and also optimizations
which reduce CPU cycles by 9% on common workload.

More details about the release is avaliable here: https://sqlite.org/releaselog/3_16_0.html

Change-Id: I14ccbd3dc05dba580c7401321df1b58b02068bf7