sqlite: Upgrade to SQLite 3.18.0

Downloaded from https://sqlite.org/2017/sqlite-amalgamation-3180000.zip

    $ sha256sum sqlite-amalgamation-3180000.zip
    1cfb91106650a12840e107db29f2ec4afe3d7f9dc5936770ef53bc3eb6387b6e  sqlite-amalgamation-3180000.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 had a conflict in shell.c.
The conflict was resolved without issues.

This major release contains the protection feature
"LIMIT_VDBE_OP", performance improvements,
bug fixes and various other enhancements.

More details about the release are available here: https://sqlite.org/releaselog/3_18_0.html



Change-Id: If9c32f48f2769b389892ab0256614d8b5eb87324
Signed-off-by: Alex Naidis <alex.naidis@linux.com>