[RESTRICT AUTOMERGE] Apply security patch to sqlite 3.18

This patch fixes CVE-2019-9936，CVE-2019-5018，CVE-2019-8457
in b/140181188 b/140180629 and b/140182003 respectively

Download from https://www.sqlite.org/src/info/b54aa18b0fe4d683
Get the Tarball or ZIP Archive, unzip it on linux machine then run:
mkdir bld; cd bld; ../configure; make sqlite3.c

Copy sqlite3.c, sqlite3.h, sqlite3ext.h, shell.c from bld directory
to dist/orig.

dist contains a copy of dist/orig, but with the Android.patch
file applied.

Test: select sqlite_version() - returns 3.18.2
Test: atest cts/SQLiteDatabaseTest all passed.

Bug: 140181188
Bug: 140180629
Bug: 140182003

Merged-In: Iad8c3d1d74d8591a75a4c033c8bf9d3956d2fe4f
Change-Id: Idab253d25374ef6c60e753086d9d8ba12f365697