sqlite: add security patches

CVE-2017-13685: The dump_callback function in SQLite 3.20.0 allows
remote attackers to cause a denial of service (EXC_BAD_ACCESS and
application crash) via a crafted file.

CVE-2017-15286: SQLite 3.20.1 has a NULL pointer dereference in
tableColumnList in shell.c
because it fails to consider certain cases where
`sqlite3_step(pStmt)==SQLITE_ROW` is false and a data structure is never
initialized.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>