recommit r357201: MFV r357163, which was reverted by r357522
due to segfault under PowerPc.
Update sqlite3-3.30.1 (3300100) --> sqlite3-3.31.0 (3310000)
MFC after: 1 month
sqlite3-3.30.1 (3300100), as it causes svnlite segfaults on PowerPC,
resulting in corruption.
Reported by: Mark Millard <marklmi at yahoo.com>
Francis Little <oggy at farscape.co.uk>